Bass

Episode 3
Bass first appeared in Episode 3 alongside his partner, Aeon. Bass blasted Link unconscious and demanded Sonic to fork over the Stone of Chaos. After the blue hedgehog refuses, he and Aeon summon the True Guardian before fleeing.

Episode 4
When Aeon proceeded to blast Knuckles in Episode 4, Bass kept the echidna away from Aeon's blast so that they can talk before they decide to kill him. Bass tells Knuckles about what's been happening to Sonic and Shadow and he and Aeon began fighting Knuckles and Tails. Eventually, both of them get defeated by Tails. In the end, Bass's armor gets destroyed.

Episode 5
Despite losing the last battle, Bass and Aeon pulled themselves together and managed to take down Knuckles and Tails. Bass knocked Tails out with his buster for destroying his armor and proceeded to blast the unconscious bodies again before Sonic blocked it. Sonic then stunned Bass before fighting Aeon.

Episode 6
After Sonic defeats Aeon, Bass comes to and knocks Sonic out and tells him he can keep the Sword and Stone for the time being. Afterwards he takes Aeon to a base and puts him in a healing pod. After this he orders Link to lead the heroes into a trap.