So this is one of those drawings where it's the color only/no pencil marks.(I don't know what they're called! T^T if anyone knows, please put it on comments) so this is Hakase(professor) is from the anime: Nichijou

And this is Tsukiko Tsutsukakushi from the anime: Hentai Ouji to Warawanai Neko (The Hentai Prince and Stoney Cat):

So if you know what these kinds are called, plz comment and tell me what they're called!