E-101 Mark II


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

E-101 Mark II (E-101改), also written as E101mkII, is a character in Sonic Adventure and Sonic Adventure DX: Director's Cut, and the final boss of E-102 Gamma's storyline. 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 on the Egg Carrier despite his failures, Dr. Eggman remade Beta into E-101 Mark II, a sight that drove his "younger brother" Gamma to rebel against his creator. When E-101 Mark II finally broke free, he was destroyed by Gamma.

Appearance
E-101 Mark II bears a strong resemblance to its previous form in terms of body shape and color scheme, but is heavily modified. It has a round black torso with a large white vertical stripe, a large muffler surrounding the pelvic area, and "101" written in white on its left side. It has a black platform-like heads with a grey visor and a single green eye moving from side to side of its featureless face. Having its legs removed, E-101 Mark II's lower torso has two green lights with a rudder-like black and white tail, and two thin grey rockets on its backsides. Also, on each of its arms, it has been given an elongated and spiky black and white gauntlet, and a large laser cannon for hands.

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

Regarded obsolete, Beta was relegated to an Egg Carrier robotics lab where Eggman began remodeling it into E-101 Mark II. There, Beta was physically dismembered where its old limbs were discarded on the floor while mechanical arms remade it. During this process, Gamma accidently stumbled into the lab as E-101 Mark II neared its completion. This horrifying display of Eggman'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 out 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 once-great fortress. 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, was defeated by several well-placed missile shots from Gamma and seemingly felt motionlessly to the floor. However, with the last of its power, it blasted Gamma at point-blank range, causing fatal damage to its younger brother and exerting its power supply at last, finally destroying it in a large explosion.

Legacy
E-101 Mark II's final act before its destruction, which was to destroy E-102 Gamma, ironically assisted in completing Gamma's mission by freeing the Flickies trapped within both of them. The Flicky released from E-101 Mark II 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.

Personality
E-101 Mark II is silent and shows no kind of sentience. By comparison, E-101 Mark II showed even less individuality than its un-upgraded form, E-101 Beta, who had a desire to follow Eggman despite failing him. Regardless, it is fiercely dedicated to disposing its enemies, making it quite ruthless, as shown when it chose to attack Gamma on the brink of its defeat, an effort that resulted in its own destruction.

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 form and was the greatest E-Series robot at its time.

E-101 Mark II possessed jets and a tail-like rudder that granted it flight and super speed, enough to leave 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 armaments included the ability to launch several guided missiles and it had an advanced tracking system in its single green eye. Additionally, it had energy cannons on its arms that let it fire powerful yellow energy beams which would cause massive explosions upon impact and could be charged for even greater power.

Besides weapon capabilities, E-101 Mark II could create temporary rainbow-colored force fields that could deflect projectiles and even be used offensively by ramming it into opponents. It also had the ability to teleport, allowing it to avoid attacks. Additionally, it possessed large and durable spiky shield-like gauntlets which could knock away missiles 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 an appearances in the anime Sonic X, where it is named E-101 "Kai". It only appeared in "Revenge of the Robot"

Much like in the games, E-101 "Kai" started out as E-101 Beta, one of the first of Dr. Eggman's E-100 Series of robots. When Beta failed to deliver Froggy when given this assignment by Eggman, it was discarded and send to be rebuilt into E-101 "Kai," a sight that eventually set E-102 Gamma on the path that would make it rebel against Dr. Eggman. When Gamma returned to the Egg Carrier to deactivate Beta, E-101 "Kai" appeared and engaged Gamma in combat, ignoring all Gamma's attempts to reason with it. The battle came to an end when they destroyed each other at the same time, and the bird powering E-101 "Kai" was released.

Archie Comics
E-101 Mark II also appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, though it goes by unnamed and is just referred to as Beta.

Like in the games, E-101 Mark II started out as E-101 Beta, the first main model of Dr. Eggman's E-100 Series robots and showed much promise. Beta was created in 3235 and was assigned its first mission of tracking down Froggy by competing against his brothers to find it, but was beaten by E-102 Gamma. Instead of wasting its potential however, Beta was given upgrades to make it more powerful, turning it into E-101 Mark II, and was sent to guard one of the outposts of the Eggman Empire where it was later destroyed by Gamma.

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").