10 Worst Things Carnage Has Done
5. Possessed A Baby - Amazing Spider-Girl #11-12
No matter the universe, Carnage will always be a complete jerk.
In one of the most famous of Marvel's alternate universe stories, the Spider-Girl series, Mary Jane gives birth to Mayday Parker's little brother, Benjamin Parker. But just as Mayday is getting used to not being the only kid in the house anymore, Benjy is taken over by a returning Carnage symbiote.
Carnage probably didn't list the infant as its first choice, but considering that the Parker family has a lot of experience by then of dealing with him, beggars can't be choosers. Carnage sought to get revenge on Peter's family by putting them in an impossible situation: let Benjy kill them all and remain the host of Carnage, or kill the infant to save him from Carnage.
Mayday, being a Spider, chose not to choose, tracked down one of her other villains, a sound based baddie named Reverb, stole his tech, and used it to force Carnage off of her baby brother with ultrasonic waves.