This leaf-tailed Pokémon quickly gained significant popularity on the Internet for its smug looks, hence the nickname. It's been called at times, "the new Mudkip", and "Smugleaf" became a sort of Pokémon variation of trollface. There were also references made about its design being similar to that of "Excalibur" from the popular anime series, Soul Eater.
Internet user 2: "Don't you mean Mudkipz?"
Internet user 1: "Not anymore"