Josephine "Jo" McCormick is the Red Striker Beetleborg, and later the Platinum Purple Beetleborg in the second season.
Jo is Drew's little sister, she was granted the ability of super strength by Flabber, which she activated by cracking her knuckles. After Roboborg arrived, Jo received an upgrade, Mega Spectra Platinum Purple Beetleborg, after Nukus and Vilor went Mega themselves. Her Red Striker armor was modeled after a flower beetle, and her Platinum Purple armor after a ladybug. Jo is often shown wearing a baseball cap backwards.