Rolo, A.K.A. Experiment 169, is an illegal genetic experiment created by Jumba Jookiba. He is designed to flatten anything in his path (does so by curling into a ball and rolling around unstoppably).
Experiment 169 was the 169th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to flatten anything in his path.
169 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.
All of the experiment pods were released and scattered across the island of Kauai.
At the unknown point, he was activated, captured, tamed, and named Rolo.
Rolo is a big, red, round creature, with an orange nose, black eyes, and four legs.
As he rolls he grows larger and larger until everything is destroyed and when he stops he returns to normal size.