Vamp, Pincher, and Scorp in "Dawn World"

Rarely seen Gobots: Defendor, Dozer, Dumper, Road Ranger, Scratch in "It's The Thought That Counts"

Snoop is present but silent in this episode, in terms of continuity it would have to occur after "Cy-Kill's Cataclysmic Trap" where  it is revealed that she's a Renegade spy.