: Ben’s plumber partner who provides tactical support and often "corrects" Ben’s casual slang.

: The Echo targets Rook, attempting to "overwrite" his Revonnahgander DNA. Ben tries to intervene, but the Omnitrix’s randomized transformations force him to get creative. He cycles through Crashhopper to dodge attacks and Gravattack to pin the Echo down.

The story begins in Bellwood’s subterranean , where Ben and Rook are investigating a series of strange energy spikes. To Ben’s annoyance, the Omnitrix is glitching again—instead of the powerhouse Humungousaur he wants, he keeps transforming into smaller, less combat-oriented aliens like Ball Weevil .

: The "Hero of Heroes" who relies on his quick thinking when his watch doesn't give him the alien he asked for.

fandom.com/wiki/Gwen_Tennyson_and_Kevin_Levin">Gwen and Kevin or a trip to a ?

: Rook uses his Proto-Tool to track the energy to an abandoned laboratory once belonging to Dr. Psychobos. They find a "Temporal Echo" of Malware , a data-ghost created when the universe was recreated. This Echo is absorbing the DNA of nearby aliens to stabilize its form.