Teen Titans (2003)

S3E1 Deception

As the H.I.V.E. wreaks havoc, the Titans spring into action. Despite their efforts, the villains manage to slip away, but Robin cleverly attaches a locator device to Jynx just before they escape. To uncover H.I.V.E.'s plans, the Titans send Cyborg, who is disguised as a muscular figure named "Stone," to infiltrate their academy.