Season
Season 6 Episode
- Season 4 Johnny's New Baby Sisters
- Season 4 Porta Johnny
- Season 4 Join the Johnny Scouts
- Season 4 Johnny BC
- Season 4 Runaway Johnny
- Season 4 Johnny on the Spot
- Season 4 Dark Johnny
- Season 4 No Homework for Johnny
- Season 4 Papa Johnny
- Season 4 The Johnnyminster Dog Show
- Season 4 Dukey Jekyll and Johnny Hyde
- Season 4 Johnny's Trophy Case
- Season 4 Johnny's Amazing Cookie Company
- Season 4 Johnny's Big Dumb Sisters
- Season 4 My Johnny Guard
- Season 4 Tom and Johnny
- Season 4 The Quantum of Johnny
- Season 4 Johnny Get Yer Gum
- Season 4 Old School Johnny
- Season 4 Johnny Degrees Below Zero
- Season 4 Johnny Johnny
- Season 4 Johnny Double Coupons
- Season 4 X-Ray Johnny
- Season 4 The Destruction of Johnny X
- Season 4 iJohnny
- Season 4 Johnny vs. The Mummy
- Season 4 Johnny Grow Your Own Monster
- Season 4 Who's Johnny
- Season 4 Princess Johnny
- Season 4 99 Deeds of Johnny Test
- Season 4 Johnny's Amazing Race
- Season 4 Johnny Test in 3D
- Season 4 Guess Who's Coming to Johnny's for Dinner
- Season 4 Johnny's New BFF
- Season 4 Johnny vs. Bling Bling IV
- Season 4 Johnny's Big Sister Smackdown
- Season 4 Sunshine Malibu Johnny
- Season 4 Johnnyicle
- Season 4 King Johnny
- Season 4 Johnny Re-Animated
- Season 4 Johnny Cakes
- Season 4 Johnny Tube
- Season 4 Sleepover at Johnny's
- Season 4 Johnny's Got a Wart!
- Season 4 Johnny's Royal Flush
- Season 4 Johnny Test's Day Off
- Season 4 Johnny & Dark Vegan's Battle Brawl Mania
- Season 4 A Scholarship for Johnny
- Season 4 Johnny Boat Racing
- Season 4 Johnny Lock Down
- Season 4 Good Ol' Johnny Test
- Season 4 Johnny X Strikes Back Again
Johnny Test - Season 4 Episode 14 Johnny's Big Dumb Sisters
6.39 11 minutes The twins' latest invention accidentally makes them dumb thanks to Johnny right before their scholarship interview.
