Fenton Crackshell-Cabrera invented Fentonium, a frictionless synthetic crystal that speeds up and gains energy as it bounces, but was so busy with his duties as Gizmoduck that Fenton couldn't find time to finish working out the equation. Consequently, the original prototype for Fentonium was initially highly unstable and had to be tied to a ping-pong racket to prevent it from tearing the lab apart.
Fenton showed the Fentonium to Gandra Dee on their date. Gandra noted that Fenton's description of it as "an innovative energy generator from a mild-mannered source" also was an apt description of Fenton himself. When Mark Beaks became Mega Beaks, Fenton used the Fentonium combined with electricity from Gandra Dee's nanites to depower Beaks. Immediately afterwards, Gandra completed Fenton's equation.
Later at the lab, Fenton used his Fentonium to recharge Li'l Bulb.
Behind the ScenesEdit
Fentonium first appeared in The Dangerous Chemistry of Gandra Dee.