Sizzler (Japanese: Beofulton (ベオフルトン Beofuruton)) is an Eklipse Monsuno. Its Controller is Bekka. It resembles a rhino with twin horns, fly-like eyes and a pair of crab claws.
Sizzler debuted in Lost, where Bekka used it alongside Pozo's Stingapede to fight Team Core-Tech. The two were able to defeat Quickforce before being beaten by Lock.
In Bright, it fought alongside Freedomstriker and Stingapede against Lock, Longfang, and Whipper until Digby Droog interrupted the battle and began firing at the Desert Wolves until they retreated. Later, Sizzler fought against Team Core-Tech again, but it was defeated by Longfang.
In Failsafe, it participated in the battle against Team Core-Tech, where Sizzler fought against Charger one-on-one, but it was eventually defeated.
In Endgame, it participated in the massive battle royale between Team Core-Tech, Eklipse, and the Desert Wolves, but Sizzler was defeated by Quickforce.