The co-host is a nameless character that first appeared in avoos 3! After that episode they were basically welcomed in the show by the host and later, legally adoped by them after the events of the last episode
the cohosts favourite animal are "Kitty Witty Cats" that appeared in the first avoos short episode, avooss 1,where we find out that one of the cats from nnosu get adopted by the host and cohost
the co-host is canonically autistic!
more stuff will be added later