The Ants are a collection of extremely powerful cosmic insects similar to earthly ants, as they tend to dine on organic matter including bits of That Human they cut off of him when in battle with him. They are very versatile, and are very powerful and intelligent themselves. Unlike earthly ants, they do not have a queen, instead, they build new Ants by arranging atoms in a certain way.
They have a very deep rivalry with That Human, as they both dine on his Fried Eggs, which both sides are annoyed by. This means combat with That Human is very frequent and is often damaging, so numbers of Ants are only at about 1000 at any moment per Other Room. They can use their smarts to make traps, some of which have made That Human lose a finger for a few yalmeon times before he regenerated. These incidents, given a large amount of infinities of time, could lead to the eventual Ant victory within The Other Room.