Grampy is an animated cartoon character appearing in the Betty Boop series of films produced by Max Fleischer and released by Paramount Pictures.
Grampy is an ever-cheerful and energetic senior citizen with a bald head and a white beard. His primary activities include singing, dancing and building Rube Goldberg style devices out of ordinary household items. When presented with an unexpected new problem, he will put on his thinking cap (a mortarboard with a lightbulb on top). In short order the lightbulb lights up and Grampy builds a new gadget to solve the problem.
It is not clear whether Grampy is actually related to Betty Boop, because everyone calls him "Grampy" and he seems to be equally affectionate to almost everyone he meets. There is also some inconsistency as to living arrangements. In some shorts like Betty Boop and Grampy and House Cleaning Blues he and Betty live in separate houses; however, in The Impractical Joker he is shown to live in an apartment one floor above hers—suggesting they are neighbors, or that he is perhaps her boarder.
Grampy appeared in nine of the later Betty Boop cartoons, often having a larger role than Betty. He also made one appearance without Betty, in the 1937 Color Classics short Christmas Comes But Once A Year.