E-101 Beta

E-101 Beta is a silver and black bipedal robot that was created for the E-100 army. He has two guided missile-launchers on his arms. Eggman defined Beta as Gamma's "big brother", and decided to pit Beta and Gamma against each other to determine which robot would leave the Mystic Ruins base to board the Egg Carrier. Gamma managed to defeat Beta, and Beta was relegated to the storage area to be used as "spare parts". Unhappy with his incompetent design, Eggman sent him to get remodeled into E-101mkII. The parts left over from the remodeling were used as spare parts for other E-Series robots.

E-101mkII


Beta was reconstructed into a "Mark II (mkII)" model, an airborne fighter with improved weapon capabilities, including advanced homing missiles, laser cannon arms, and large spiked gauntlets used for bludgeoning "charge" attacks. Beta mkII navigated with a tail "rudder" and employed an advanced tracking system in his single green "eye". Its improved capabilities included the ability to create a rainbow-colored energy shield, fire a spread of several (ranging from 2 to 10) homing missiles, and fire powerful yellow energy blasts from great distances. It could also knock away hostile projectiles with its arms.

Gamma and the "new" Beta faced off once again aboard the downed Egg Carrier as part of the former's crusade to "rescue" his brothers from Eggman's control. Beta, despite improvements, was defeated. But he would not go down alone, with what power remained, Beta blasted Gamma at point-black range, destroying his brother and ironically completing E-102's mission by freeing the animal trapped within him.

Trivia

 * Beta is mentioned in Sonic Heroes, when Team Dark gets an E -Rank Omega would ocasionally say "I couldn't even beat Gamma or Beta."