Spyro 2: Ripto's Rage!
Lumpy resided next to the bridge across the gorge to the part of Skelos Badlands where all the young Bonebuilders, Lumpy's "little buddies", live in their boney huts. When their living quarters had been overrun by Lava Lizards, Lumpy tasked Spyro with defeating them all before they ate the Bonebuilders. Lumpy rewarded Spyro with an Orb for his efforts. However, some Pterodactyls flew in and dropped off a bunch of new lizard-eggs, and Spyro had to do the deed once more. Lumpy rewarded Spyro another Orb for his hard work.
Spyro: Shadow Legacy
When Ooga had secretly hidden the cavemen's treasured booga-booga mask and blamed Lumpy for doing it, simply because he didn't like him, Gronk, the leader, took Lumpy to the Cliff of Danger as punishment, however when Spyro found the mask, Ooga became uneasy which alerted the cavemen that Ooga was the thief and Gronk quickly told him to go there, and released Lumpy. Lumpy wanted to take a nap in his home, but couldn't get across, so Spyro had to magically move a stairway of platforms for him.
- Lumpy is the only one of the cavemen who appeared in Ripto's Rage! and returned in Shadow Legacy to have kept his original appearance.