Alfred Pennyworth to reject Alfred. (The name "Pennyworth" was first used for Alfred in 1969 and thereafter it has been assumed that his father was named Jarvis Pennyworth; as it is customary for British domestic servants to be called by surname it might have been implied on Alfred's introduction that Jarvis was the surname he shared with his father; the surname "Beagle" was explicitly used for Alfred starting in 1945 and on the introduction of "Pennyworth" this is treated as having always been their name by retcon). Initially, Alfred discovered their identities by accident; while fighting a burglar in "Batman" #16 (Alfred's
Batman Versus Predator suspects that they are cold-blooded and vulnerable to frigid temperature. The plan works, but only lures one of the two aliens. Responding to Batman's confusion, and using Tim Drake's voice, the Predator indicates that it is now tracking Robin at a drive-in theater with friends, where he is watching old science-fiction films. Batman then ensnares the elder Predator with Mr. Freeze's absolute zero cannon. Alfred contacts Robin, who immediately accepts the truth and returns to the Batcave when he sees the creature's silhouette. The butler explains what little they know of their assailants before they are attacked. The two are