Ben 10 Alien Collection Series 2 BenMummy Action Figure (Battle Version)

Ben gains this form in Under Wraps when another mummy alien inadvertently adds its DNA to the Omnitrix, but accidentally transforms into Upgrade instead when trying to use him. Ben first uses the form in The Return to fight off the Yenaldooshi. The credits give the name Benmummy, though Ben has not named it yet on-screen