League of Legends
Urf the Manatee
Los Angeles, California, U.S.
In 2010 Riot staged an April Fool's Joke where they introduced a fake new champion, "Urf the Manatee." After a large amount of enthusiasm from the game's player base, Riot decided to donate the proceeds made from selling in-game skins to the Save the Manatee Club, a national non-profit organization striving to save and raise awareness of manatees.