"Ba was a big animal, a giant, and more fearsome then most beasts on Vampa. I named Ba after the sound the creature would make sometimes. It was scary when it got mad. But, I got over that. Then I started to train by avoiding Ba's teeth. We became like friends, we became like good friends."
Ba looks like a green furred attack dog yet with the body of a snake. One of its ears was shot off by Paragus.
Dragon Ball Super
Main article: Dragon Ball Super: Broly Broly says his pelt is the ear of his first and only friend, Ba. Ba is one of the giant serpentine creatures that live in the craters of Vampa; Cheelai and Lemo never saw one, so Broly explains that they are bigger even than Frieza's Spaceship. When he was a child, part of his training was learning to dodge the attacks of Ba, named after the sound he made when he attacked. Eventually, Ba came to see him as a friend, and no longer attacked him. Paragus was however unhappy with this development as it interfered with Broly's training, so he shot Ba in the head with a Ray Gun, severing his ear. Ba never trusted Broly again and wouldn't come back, so Broly resolved to start wearing Ba's ear so that they could always be together.
Ba's power level is not explicitly stated, but due to the facts that Vampa is considered a dangerous planet by the Frieza Force and that baby Broly in a calm state had a power level of 920 and only kept growing stronger had faced him afterwards, it's safe to assume that Ba's power is over 920.
- Ba vs. Broly