Seebik is a villain who first appeared in Hot Stretch.
Seebik has light bluish skin, purple hair, big white eyebrows and violet face and body markings. He has a large build, even for a Kraaho. He normally wears blue winter clothes, and underneath them he wears a traditional Kraaho outfit.
In Hot Stretch, He planned to bring magma out of the Earth's crust and turn the surface into a new colony for the Kraaho, but was defeated by Ben and Rook. After being defeated, he unwillingly passed the leadership of the Kraaho onto Ester.
In Special Delivery, he, alongside a few other Kraaho still loyal to him, were among the villains who were attempting to take the Dwarf Star from Ben. When Ben asked Seebik if Ester knew what they were doing, he replied "I hope not," implying that he was going rogue.
Ben 10: Omniverse
The name Seebik is a play on 'Seebeck Effect', a thermoelectric effect.