123movies
Young Justice S3E21 poster

Watch Young Justice – Season 3 Episode 21: Unknown Factors

Young Justice • Season 3, Episode 21 • 23 min • 2010 • ⭐ 8.4/10 • Action & Adventure , Animation , Sci-Fi & Fantasy

Cast: Khary Payton , Jesse McCartney , Nolan North , Danica McKellar , Stephanie Lemelin , Greg Cipes , Lacey Chabert , Denise Boutte

Directors: Greg Weisman , Brandon Vietti

Watch Young Justice – S3E21

Episode Overview

Dick Grayson and Jefferson go after Gretchen Goode -- and they encounter the ominous Overlord.

Episode Navigation

← Previous Episode Back to Season 3 Series Overview Next Episode →

More Episodes from Season 3

Young Justice S3E1 poster
S3E1 • 24m
Princes All
 Young Justice S3E2 poster
S3E2 • 23m
Royal We
 Young Justice S3E3 poster
S3E3 • 22m
Eminent Threat
 Young Justice S3E4 poster
S3E4 • 21m
Private Security
 Young Justice S3E5 poster
S3E5 • 23m
Away Mission
 Young Justice S3E6 poster
S3E6 • 23m
Rescue Op
 Young Justice S3E7 poster
S3E7 • 24m
Evolution
 Young Justice S3E8 poster
S3E8 • 22m
Triptych
 Young Justice S3E9 poster
S3E9 • 22m
Home Fires
 Young Justice S3E10 poster
S3E10 • 22m
Exceptional Human Beings
 Young Justice S3E11 poster
S3E11 • 22m
Another Freak
 Young Justice S3E12 poster
S3E12 • 23m
Nightmare Monkeys
 Young Justice S3E13 poster
S3E13 • 23m
True Heroes
 Young Justice S3E14 poster
S3E14 • 24m
Influence
 Young Justice S3E15 poster
S3E15 • 22m
Leverage
 Young Justice S3E16 poster
S3E16 • 23m
Illusion of Control
 Young Justice S3E17 poster
S3E17 • 23m
First Impression
 Young Justice S3E18 poster
S3E18 • 22m
Early Warning
 Young Justice S3E19 poster
S3E19 • 24m
Elder Wisdom
 Young Justice S3E20 poster
S3E20 • 24m
Quiet Conversations
 Young Justice S3E22 poster
S3E22 • 24m
Antisocial Pathologies
 Young Justice S3E23 poster
S3E23 • 23m
Terminus
 Young Justice S3E24 poster
S3E24 • 22m
Into the Breach
 Young Justice S3E25 poster
S3E25 • 24m
Overwhelmed
 Young Justice S3E26 poster
S3E26 • 26m
Nevermore

Watch More TV Episodes Online

Stream Young Justice and thousands of other TV series in HD on 123movies. Browse all TV series, explore genres, or find shows by year.