E-101 Beta (Archie)

E-101 Beta was the first main model of Dr. Eggman's E-100 Series robots. Along with E-102 Gamma, E-103 Delta and E-104 Epsilon, Beta was dispatched to retrieve a frog which had swallowed part of Chaos. While Gamma proved successful in retrieving the right frog, Beta and the others did not, and were beamed away to be disposed of.

Instead of being destroyed however, Beta was equipped with upgrades that allowed it to constantly remain airborne, due to its promising performance prior to that mission. Despite these upgrades, Beta was destroyed by his "brother" E-102 Gamma after the latter rebelled against Eggman and struck out on his own, destroying any other E-100 unit he could find.

Trivia

 * E-101 Beta replaced the role of E-105 Zeta in the comics, who did not make an appearance at all. Beta was mistakenly colored purple in issue 81, though was clearly marked E-101 in the backstory of issue 82.
 * Beta's upgraded design was mistakenly coloured black, white, yellow and red compared to his upgraded black, white and green design in Sonic Adventure. A few other design changes include the optic modules (Beta's final version has a unique optic design in the games, instead of the standard 2 eyes) and the waistplate, which was absent in the comic.