In Ben 10: Omniverse, Big Chill is depicted with a more muscular, hunched-over physique, larger claws, and wings that are more bat-like than moth-like. The design changes are often attributed to a more detailed look for the species, Necrofriggians, and are sometimes explained in the context of larger lungs to house his ice-breathing abilities. The Omnitrix symbol's location varies depending on Ben's age: on his chest for the younger Ben (15) and on a belt for the older Ben (16).

Physique: Big Chill is more muscular and hunched over in Omniverse, with a larger chest and abdomen.

Head: His head features additional blue brows, a more prominent jaw, and a wider mouth showing six teeth.

Wings: The wings are now larger and shaped more like a bat's.

Details: He has a black beard-like design under his chin and a blue stripe on his chin.

Clothing: His robe is larger when his wings are folded, reaching his ankles instead of his knees.

Omnitrix: The placement changes based on Ben's age:

15-year-old Ben: The Omnitrix symbol is on his chest.

16-year-old Ben: He wears a green belt with the Omnitrix symbol on his waist.