- Rex Splode: I don't know what just happened, but I think I speak for everyone here when I say I never want it to happen ever again!
- Invincible: [introducing himself] Invincible.
- Allen the Alien: Oh, yeah? Little optimistic, isn't it?
- Invincible: Yeah, I know.
- Allen the Alien: I just fought you, and I think you're quite "vincible".
- Debbie Grayson: Just missing your dad. He didn't come home last night.
- Mark Grayson: Mom, stop worrying. He probably got buried under a mountain again or something.
- Debbie Grayson: Well, it wouldn't be the first time.
- Mark Grayson: I never recognized you before.
- Eve: No one does. It's a psychology thing. If you don't expect to see a superhero in your school, you don't see a superhero in your school.
- Rex Splode: I love you, man, but sometimes you've got a screw loose.
- Robot: I don't use screws. My fastenings are all magnetic interlocks.
- Mark Grayson: Dad saved us from the Flaxans. But he went into one of their portals.
- Debbie Grayson: Oh. So he'll be late for dinner?
- Cecil Stedman: You got a problem with the demon? I thought you were an atheist, Donald.
- Donald Ferguson: Theor... theoretically.
- Debbie Grayson: I was worried before because I've never seen your father so badly hurt, but taking on aliens in another dimension? That's just Tuesday.
- Atom Eve: It's a psychology thing. If you don't expect to see a superhero in your school, you don't see a superhero in your school.