Cosplay Day

March 15, 2020
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Ben 10 - S4 - E14

Cosplay Day

Team Tennyson enjoys the biggest convention in town, but when a gawky costume store employee finds a familiar-looking helmet in the back of the store and tries it on, Ben is faced with the return of an old foe in a new form: Forever Knight.

Ben 10: Season 4 - 34 Episode s