Lightbulb's gender is complicated; the character was initially male but later transitioned to female.
Initially, from "The Crappy Cliff" until "The Arena of Death," Lightbulb was consistently referred to as male. However, this changed later in the series. The reason for the change, according to Adam Katz, was to balance the gender representation among the characters, addressing an earlier imbalance where male characters outnumbered female characters.
Therefore, whether Lightbulb is considered a boy or a girl depends on the point in the story being referenced.
