The Bunsen Burner is one Rex's all new and first build to be built by Ben's dimension nanites.It is a really good and useful build since it's powerful,strong,and can shoot blaze.Rex is not yet fully comfortable using this build since it's with completely different and all new nanites.
History[]
It's an all new build that Rex first use in the Heroes United the series episode "Zone Zero".
Ben used this build to defeat the Yanaldooshi.
Powers[]
It shoots flames from the edge of the top of Rex's Knuckles.
It is also a strong build like the Smack Hands,so he could also use this build to smash objects.