E-101 Mark II


 * For E-101mkII's original form, see E-101 Beta.

E-101 Mark II (E-101改), also written as E101mkII, is a character and the final boss of E-102 Gamma's storyline in Sonic Adventure and Sonic Adventure DX: Director's Cut. It is an animal-powered robot and the upgraded form of E-101 Beta, an unit from Dr. Eggman's E-100 Series. When E-101 Beta was allowed to stay onboard the Egg Carrier despite his failures, Dr. Eggman remade Beta into E-101 Beta into E-101 Mark II, a sight that drove his "younger brother" E-101 Gamma to rebel against his creator. Eventually, E-101 Mark II broke free, but was shortly after destroyed by Gamma and had its Flicky released.

History
When E-101 Beta lost in combat to his "younger brother" E-102 Gamma onboard the Egg Carrier for membership of the Egg Carrier's crew, it mutely pleaded to its creator Dr. Eggman to come along. Eventually, Eggman was convinced on they grounds that they could "always use a spare set of parts".

Regarded obsolete, Beta was relegated to an Egg Carrier robotics lab where Dr. Eggman began to work on completely remodeling it into E-101 Mark II. There, Beta was physically dismembered where his old limbs was being discarded on the floor as a pile of scrap while mechanical arms remade him. During his rebuilding process, Gamma accidently stumbled into the lab as E-101 Mark II neared completion. This horrifying display of Robotnik's callous cruelty even towards his own creations would serve as the breaking point that set Gamma on the road to apostasy, making him betray Dr. Eggman numerous times before setting off on his own and deleting Eggman from his master registration.

After the Egg Carrier had crashed, E-101 Mark II was completed and the robot eventually escaped from the remains of the Egg Carrier's labs. Shortly after though, E-101 Mark II faced off against Gamma, as a part of the former's fratricidal crusade to "rescue" his brothers from Eggman's control by destroying them. E-101 Mark II, despite its numerous improvements, had its weaknesses exploited, and was defeated by several well-placed missile shots. After its defeat, the critically damaged E-101 Mark II fell motionlessly to the floor of the Egg Carrier. However, with the last of its power, E-101 Mark II blasted Gamma with its cannons at point-blank range as he approached, causing fatal damage to its younger brother and exerting its power supply at last, finally being destroyed in a large explosion.

Legacy
E-101 Mark II's final act before its destruction which was to destroy E-101 Gamma, it ironically assisted in completing Gamma's mission by freeing the Flickies trapped within both of them. Also, when E-101 Mark II was destroyed, it released the Flicky which powered it. This Flicky would then be reunited with its other family members, a pink Flicky who had been powering Gamma and a blue Flicky who had been protected by Amy Rose, all three of them having been separated due to Eggman's evil ambitions.

Powers and Abilities
Following its upgrade, E-101 Mark II had been enhanced into a powerhouse of a fighting machine in almost every way over its previous model and was the greatest of the E-Series robot at its time.

E-101 Mark II possessed jets and a tail-like rudder that granted it midair flight and super speed, enough to move so fast that it left afterimages in its wake. It was also much more agile than its previous form, being able to dodge missiles at extreme speed. Some of its new armament features included the ability to launch advanced Guided Missiles and it had an advanced tracking system in its single green eye. Additionally, it possessed energy cannons that allowed to fire powerful yellow energy beams, which would cause massive explosions on contact with the ground and could be charged for even greater power.

In addition to its improved weapon capabilities, E-101 Mark II could create temporary rainbow-colored force fields that could block any attack and even be used offensively by ramming it into opponents while action, and it had the ability to teleport certain distances. It also possessed large and durable spiky shield-like gauntlets which knock away missile by backhanding them and be used for high-speed charging attacks.

Boss Guide
The Mark II's most dangerous attack is nasty, but it telegraphs it by zipping backward to put some distance between the two of you. When the Mark II rushes forward, get out of its way by leaning hard to one side as you jump and use the Jet Booster. Avoid a direct collision, and the Mark II will continue moving to the edge of the ring, turning its back to you. Now, target it. Even though you can't hit this enemy from the front, you can target and destroy its missile barrages. When the Mark II retreats to a position above the ring, jump and use your Jet Booster to move back and forth across the area and avoid its attack. When the Mark II is finished, so is Gamma's adventure.

Sonic X
E-101 Mark II makes a few appearances in the anime Sonic X, where it is named E-101 "Kai". It only appears in "A Robot Rebels" and "Revenge of the Robot"

Trivia

 * E-101 Mark II is fought on the same place as Chaos 6 and ZERO.
 * Despite being renamed in the English release, the music track for E-101 Mark II is still called "ENEMY:E-101 Improved" (from its Japanese name, E101改).