
Tabitha Smith is a fictional character, a mutant superhero appearing in American comic books published by Marvel Comics, commonly in association with The X-Men and related titles. Created by Jim Shooter and Al Milgrom, the character first appeared in Secret Wars II #5 (November 1985). She then appeared as a member of X-Force and later as a member of Nextwave. Since her first appearance, Tabitha has used a number of different code-names, including Time Bomb, Boom-Boom, Boomer, and Meltdown. Tabitha is one of the mutants to have kept their powers after the 2005 "House of M" storyline.