Atomic Roger briefly appeared at the beginning of Hi-Jinxed.
Betty: Not only am I about to be eaten by robotic sharks, I got a robot version of me runining Noah's birthday party.
Penelope: I just want you to know that Paloma is sitting with me at lunch. I'd invite you too, but you know...
Betty: That's okay. I'd rather go to the dentist. Drilling is a lot more fun then you.
X-5: Wow! He really is a klutz!
Betty: Paloma's gonna see right through that super-snob!
Jinx: Once I drink this, I'll be invincible!
Jinx: You all once laughed at me but now I'm laughing at you!
Noah: Whoa! Nice moves, Betty!
Villains: Maximus and Jinx
Hi-Jinxed: Jinx with a four leaf clover in his hand
Robo-Betty: Betty and Maximus fighting in the forms of robots.
Jinx is a word that makes reference to a people who brings bad luck, so when a people brings or have bad luck is normally called "Jinx".
The robot forms of Betty and Maximus in the title picture for Robo Betty look just like the ones that are part of the famous game, Rock-em, Sock-em Robots