There are no dumb questions, only inquisitive idiots. And the red-head right next to Cosmos is ChibiChibi, whose identity varies depending on whether you're reading the manga or watching the anime.
Actually one of the 90s animation directors drew this. Can't recall which one but if I had that chart of the directors I could probably point it out. The other version is by a fan/offical merch and DVD cover artists. :)