Burlo, an enemy of Popeye, is a character that appeared in the comic Thimble Theatre in 1959, created by Ralph Stein and Bela Zaboly towards the end of their tenure on the strip. Burlo is a cutthroat that fashions himself as a honest sea captain, aided by his equally corrupt crew. Most notably, Burlo is the twin brother of Bluto, although he distinguishes himself from his twin by not having a beard.
Unlike Brutus, who was created as a stand-in for Bluto and was only made to be the latter's twin after a period of decades, Burlo was presented as the more popular villain's brother from the start. It is unclear if this makes him either an analogue to Brutus or a third brother, making them in fact triplets.