Kamen Rider W / Rider Forms

Double Forms
When Shotaro and Philip set their Gaia Memories into the Double Driver Belt, Philip's conscious mind enters Shotaro's body to produce Double. Their quote at the start of a battle is "Now, count your sins!", a quote originally used by Sokichi Narumi. When combined as Double, Shotaro usually does most of the talking, though both speak when saying their pre-battle quote and announcing Maximum Drive attacks. When Philip speaks by himself when transformed, Double's right eye flashes. Double's ability to function is dependent on the condition of both Shotaro and Philip. If their synchronization is somehow disrupted, Kamen Rider Double will be unable to move properly. If their Rider form takes any damage at all, both of them will feel the pain after returning to normal and Philip will often pass out due to his weaker constitution. Shotaro's habit of flicking his wrist carries over to Double. Kamen Rider Double is unique among Kamen Riders in that rather than having explicitly defined forms, he instead has mix-and-match powers. Through the different Gaia Memories, Double has access to various combos of powers and weapons. Kamen Rider Double's forms accessed through their first 6 Gaia Memories are known as Half Changes, due to the fact that Double can switch out one (or both) in the belt in a Memory Change to change forms. Each different version of Kamen Rider Double has its own finishing attack(s) known as Maximum Drives. The energy imparted by the Maximum Drive doesn't destroy the Dopant but rather its Gaia Memory, resulting in the ejection of the Gaia Memory from the user's body and the destruction of the Gaia Memory called a Memory Break.

CycloneJoker
CycloneJoker is Kamen Rider Double's primary form, colored green and black and is accessed from the Cyclone and Joker Memories. In this form, Double's kicks are powered by wind, increasing the damage and adding cutting potential. This form's Maximum Drive finisher is a Rider Kick called the Joker Extreme, during which a tiny controlled tornado lifts Kamen Rider Double into the air before Double's body splits down the middle as the halves reach their target in a drop kick fashion. A variation of this attack involves Kamen Rider Double jumping off the back wheel of Kamen Rider Accel Bike Form, allowing for faster acceleration upon descent. During the events of Shotaro's jidaigeki-influenced dream, this form is known as ShippuKirifuda, and the Gaia Memories are replaced by wooden placards known as kifuda.

CycloneMetal
CycloneMetal is a green and silver-colored Half Change accessed through the Cyclone and Metal Memories. In this form, Double can wield the Metal Shaft by means of the Metal Memory's powers. When swung, the Metal Shaft creates blades of wind by means of the Cyclone Memory. This form's Maximum Drive finisher is the Metal Twister where Double spins around while swinging the Metal Shaft covered in an aura of wind.

CycloneTrigger
CycloneTrigger is a green and blue-colored Half Change accessed through the Cyclone and Trigger Memories. In this form, Double wields the Trigger Magnum by means of the Trigger Memory's powers and is able to shoot out high compressed air by means of the Cyclone Memory's powers. This form's Maximum Drive finisher is the Trigger Aerobuster, firing multiple shots of pressurized air at the enemy.

HeatJoker
HeatJoker is the first Half Change form used by Kamen Rider Double when he appears in the Kamen Rider Decade film, colored red and black and is accessed through the Heat and Joker Memories. In this form, Double can throw flaming punches by means of the Heat Memory's powers. This form's Maximum Drive finisher is a Rider Punch called the Joker Grenade, during which Kamen Rider Double somersaults in mid-air, then HeatJoker's body splits down the middle during descent as the halves each hit the target with elementally energized hooks.

HeatMetal
HeatMetal is the second form used by Kamen Rider Double, first appearing in the Decade movie All Riders vs. Dai-Shocker. It is colored red and silver and is accessed from the Heat and Metal Memories. In this form, the damage from the Metal Shaft is increased by fire. A common tactic used by Double is to turn around while changing to this form, using the Metal Shaft on his back to block enemy attacks. This form's Maximum Drive finisher is the Metal Branding, causing one or both ends of the Metal Shaft to ignite on fire and deliver a final blow to the opponent. A variation of this attack is the Steam Metal Branding, with the use of Accel's Engine Blade in the Hyper Battle DVD.

HeatTrigger
HeatTrigger is a red and blue-colored Half Change accessed through the Heat and Trigger Memories. In this form, Double wields the Trigger Magnum by means of the Trigger Memory's powers and shoots fire blasts by means of the Heat Memory's powers. This form's Maximum Drive finisher is the Trigger Explosion, which fires a single constant stream of fire that completely melts the enemy. HeatTrigger is the only form of Double's that has attempted to perform a Twin Maximum, in which the Trigger Magnum blasts out a massive fireball that incinerates anything in its path.

LunaJoker
LunaJoker is the first Half Change form used by Double within the series, a gold and black-colored form accessed through the Luna and Joker Memories. In this form, Double has the ability to stretch his right limbs by means of the Luna Memory's powers. This form's Maximum Drive finisher is a Rider Chop called the Joker Strange, during which LunaJoker splits down the middle, the Luna half makes four copies of itself, and all five Luna halves execute rapid-fire karate chops on the target, and then the Joker half strikes the target with an energy powered chop.

LunaMetal
LunaMetal is a gold and silver-colored Half Change accessed through the Luna and Metal Memories. In this form, Double can wield the Metal Shaft by means of the Metal Memory's powers, using the Luna Memory's abilities to use it like a whip. This form's Maximum Drive finisher is the Metal Illusion where Double spins the Metal Shaft around to create golden rings that float around Double, before unleashing them upon the target all at once.

LunaTrigger
LunaTrigger is a form that first appears in the television series. It is a gold and blue form accessed from the Luna and Trigger Memories. In this form, Kamen Rider Double's Trigger Magnum is able to fire gold and blue bolts that can curve and track targets. This form's Maximum Drive finisher is the Trigger Full Burst, which fires multiple charged homing shots at the enemy.

FangJoker
FangJoker is a white and black form that Kamen Rider Double first uses to escape from Philip's captors during the events of the Begins Night as seen in Kamen Rider Kamen Rider W & Decade: Movie War 2010. As the Fang Memory was designed for Philip, he and Shotaro's roles as Double are reversed in FangJoker, with Shotaro's consciousness transferred into Philip's body for the transformation. Because of this, when Shotaro speaks, Double's left eye flashes. This allows Philip to go out into the open and utilize Double in case Shotaro is not around to help. However, the transformation is extremely taxing on Philip's body, and he lost control of himself in this form during its first two uses. In addition, they cannot stay in the FangJoker form for too long due to Philip's weaker body. By activating the Fang Memory's horn between one and three times, FangJoker is able to summon a bladed weapon that forms on various portions of FangJoker's body. One time summons the Arm Saber on FangJoker's wrist to be used as a close combat weapon; two times summons the Shoulder Saber, which can be removed from his right shoulder to be used as a dagger or boomerang-like weapon; three times summons the Maximum Saber on his right ankle. This last Saber is used to perform FangJoker's Maximum Drive: the flying roundhouse Rider Kick Fang Streiser, in which a projection of the Fang Memory's head is shown "biting" the opponent when Double comes in contact.

CycloneJokerXtreme
CycloneJokerXtreme is the evolved form of CycloneJoker accessed with the Xtreme Memory, linking it directly to the infinite knowledge of the true Gaia Memory through the iridescent band going down the middle of Kamen Rider Double's body called the Crystal Server. It also represents the perfect union between Shotaro and Philip, as they become completely one through the Xtreme Memory absorbing Philip and attaching to the Double Driver. Thus when either Philip or Shotaro speaks on their own, their respective side's eye flashes, they also appear together as soon as they end the transformation. The knowledge of this form allows Double to instantly analyze the opponent's capabilities. CycloneJokerXtreme's Maximum Drive is the Double Xtreme Rider Kick; after closing and opening the Xtreme Memory, a twister forms around Double that lifts him into the air to then accelerate him down towards his target. By using the Prism Memory in the Double Driver's Maximum Slot and activating its Maximum Drive as well as the Xtreme Memory's Maximum Drive, it enables CycloneJokerXtreme to perform a powered-up version of the Double Xtreme called the Double Prism Xtreme which extends the initial drop kick into bicycle kicks. In this form, Double wields the Prism Bicker which has its own Maximum Drives.

CycloneJokerGoldXtreme
CycloneJokerGoldXtreme is an enhanced version of CycloneJoker Xtreme that appears in Kamen Rider W Forever: A to Z/The Gaia Memories of Fate as a result of strong winds affecting the Xtreme Memory. In this form, the Crystal Server turns golden with a set of insect wings that allows Double to fly. CycloneJokerGoldXtreme's Maximum Drive is the Golden Xtreme Rider Kick. Double uses this form again during the events of Movie War Core to finish Kamen Rider Core along side Kamen Rider OOO Tajadol Combo.

CycloneAccelXtreme
CycloneAccelXtreme is a form that is only described by Shroud as being the ultimate form that can be attained by Kamen Rider Double. Rather than being a union between Shotaro and Philip, CycloneAccelXtreme is the union of Ryu Terui and Philip, as both of their physiologies make them immune to the attacks of the Old Dopant and the Terror Dopant. Shroud states that Ryu's hatred and rage is needed for Double to fight at its full potential. However, Ryu decides not to fight as part of this form after showing Shroud that they can fight with compassion rather than hatred. Though not making a physical appearance in the series, CycloneAccelXtreme appears in Kamen Rider: Climax Heroes OOO where he is armed with both the Engine Blade and the Prism Bicker. While able to use the Engine Blade's Gaia Memories in his attacks, CycloneAccelXtreme uses the Prism Memory's ability to link Philip's three elemental Gaia Memories with the Accel Memory to perform his own version of Bicker Finallusion.

Final Form Ride
During the events of Kamen Rider Kamen Rider W & Decade: Movie War 2010, Kamen Rider Decade uses the "Kamen Rider W" Final Form Ride card and splits CycloneJoker into two separate iterations of Kamen Rider Double. When Decade uses the Final Attack Ride card, Double CycloneCyclone and JokerJoker alongside Decade can execute the Triple Extreme Rider Kick.

CycloneCyclone
CycloneCyclone (is the green Final Form Ride form that Philip can control independently. In this form, another Cyclone Memory for the Body Side is produced and gains the power over wind. CycloneCyclone also gains a second Windy Stabilizer scarf on his left side.

JokerJoker
JokerJoker is the black Final Form Ride Form that Shotaro can control independently. In this form, another Joker Memory for the Soul Side is produced and gains the power of agility and strength. In Kamen Rider W Forever: A to Z/The Gaia Memories of Fate, Shotaro can transform into a similar rider called Kamen Rider Joker by using the T2 Joker Memory and the Lost Driver.

Accel Trial
Kamen Rider Accel Trial is the powered up form of Kamen Rider Accel. It is much faster than Accel's normal form, but its armor and overall power is weaker as a result. It makes up for its weakness by being able to punch and kick much faster, as well as increasing his overall movement speed (running, dodging, etc.) to a great degree. Once the Maximum Drive is initiated, Accel Trial can only be used for another 10 seconds before being forcibly reverted to human form, but the transformation is retained if the Trial Maximum Drive is successfully executed in under 10 seconds. This form's Maximum Drive is the Machine Gun Spike Rider Kick, a series of multiple kicks in a row which leave a series of energy treadmarks in the form of a T. The power of this Maximum Drive is only limited by how many kicks Accel Trial can perform within the 10 second time limit. When Accel Trial combines the Engine Maximum Drive with the Trial Maximum Drive, he can perform the Machine Gun Slasher Maximum Drive, repeatedly slashing the target in the time limit rather than kicking. Accel Trial's motif also includes the motocross off-road bike. While transforming from into Accel Trial, Kamen Rider Accel changes colors from red, to yellow, and then finally to blue as Accel Trial.

Accel Booster
Kamen Rider Accel Booster is a powered up form of Kamen Rider Accel that is set to appear in Accel's version of the Kamen Rider W Returns DVD releases. This yellow-colored form of Accel uses the wind power of Futo channeled through the Gaia Memory Enhancing Adapter, increasing Accel's power three-fold. Accel Booster has more armoring than Accel Trial and also has three times as much thermal energy output.