If you don't know this guy, it is Darwin Raglan Caspian Ahab Poseidon Nicodemius Watterson III - a character in The Amazing World of Gumball series on Cartoon Network. He used to be Gumball's pet goldfish, but one day, he grew legs and generally adapted to life outside of water, so he was adopted by the Watterson family. As you see, right now he is confused and sweating, because you still don't have this Gumball Darwin Watterson Sweating Sticker with him.