Frostguy

Frostguy is Frostina's boyfriend from the movie Snow in Comedy World. He, and his girlfriend Frostina, made cameo appearances in S.M.E.L.L.Y. He and his girlfriend are only alive in the winter, meaning they are inactive in other seasons.

In Snow in Comedy World
You can see what he did in the movie on his girlfriend's page.

In S.M.E.L.L.Y
He and his girlfriend both made cameos in "Go In The Hole" where they are seen in the zoo feeding animals