Rufus MacAllister

Rufus Macallister, or by his nickname "Mother Doomsday", is a comic store clerk that Lloyd Garmadon knows of. In the episode, Child's Play, he makes his debut appearance as an individual who knows how to defeat extinct or nonexistent monsters. After the Grundle's defeat, he saw Lloyd magically reach maturity throughout the effects of the "special tea". Tearful and proud of Lloyd's new lifestyle, Rufus offered to give his copy of the comic book, "Starfare", to Lloyd as a token of gratitude, but Lloyd rejects the offer, as he claims to know how the book ends.