Ben 10 S4 · EP14
Cosplay Day
5.9 · 2016 · Kids,Animation,Comedy,Action & Adventure,Sci-Fi & Fantasy · ~11m
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.
