Baby

Baby, one of the last remnants of the Tuffles, a race wiped out by the Saiyans. Baby was a creature engineered through science to take revenge on the Saiyans that eradicated the Tuffles. He was very dangerous, cunning and manipulative. Though he lacked the raw power to properly take revenge, he did have another means to combat his enemies.

Possession.

Baby was a parasite. He could infect a host, steal their body and use it as his own, either as a means of furthering his goal through espionage as a stronger host, or by draining its power to strengthen himself. It was through this technique that he was able to infect the prince of saiyans, Vegeta and dominate the planet Earth, making it the new world for the Tuffles.

Alas...Baby had been foiled by that wretched Goku and his friends. He had tried to escape once he realized just how bad the situation had gotten but Goku had blasted him into sun, killing him.

Or so he thought.....

Instead Baby had fallen into a rift in space time allowing him to escape his death and try again, with a new body and new plan in mind.