Batman an occasional ally and romantic interest), the Penguin, Ra's al Ghul, Two-Face, the Riddler, the Scarecrow, Mr. Freeze, Poison Ivy, Harley Quinn, Bane, Clayface, and Killer Croc among others. Many of Batman's adversaries are often psychiatric patients at Arkham Asylum. Batman's butler, Alfred Pennyworth, first appeared in "Batman" #16 (1943). He serves as Bruce Wayne's loyal father figure and is one of the few persons to know his secret identity. Alfred raised Bruce after his parents' death and knows him on a very personal level. He is sometimes portrayed as a sidekick to Batman and the only other resident of
Batman (TV series) could have his outfit. The animated spin-off of "The Lego Movie" starring Batman features a number of references to the television series. When Alfred addresses similar phases of Batman's life (in which he references all the years a Batman live-action film was released), he mentions "that weird one in 1966" in which the film briefly shows a clip of Adam West's Batman dancing in an episode. During the film's climax, Alfred dons an identical costume to Adam West's Batman out of nostalgia. When Batman and Robin take on a room of villains, they hit them so hard that onomatopoeia pops