Also as her normal-self in general. Even though she's young, she's built like an unstoppable sumo wrestler. She can get hit by a wrecking ball, have a building dropped on her, and even if solid metal girders manage to stun her, she immediately recovers.
Made of Iron: A lot has happened to him... the majority of things that caused him pain have lasted for more than a few seconds. Although there are times when he's reached his limit and his little fragile frame shows.
Satan: In the pilot episode(& only the pilot episode).
Super Strength: Shown several times, such as in "Whose Supercow?", when he tries to lure Supercow out by pretending to be crushed by a piece of kryptonite several times his size. When it doesn't work, he just picks the thing up & throws it away.
Also shown in "Boneless Kite", the episode where he dresses up as a pilot & gets into a tug-a-war with a small tribe...using Boneless Chicken. If Cow & Chicken didn't help the tribe, he might've won, considering how much they struggled against him.
Just look at "Comet!", where he mistakes a golf ball on a string for a comet, even though the side facing his telescope clearly had Dad's ball written on it! However, so did everyone except for Chicken...
Villainous Breakdown: Near the end of "I Scream Man", he gives off one of the funniest breakdowns in the history of breakdowns due being heckled by the main characters(& a random pig) over ice cream.
Red: AAAAAHHHH!!!!! I CAN'T TAKE IT ANYMORE!!!! I don't have any ice cream! Not one, so! EVER! (Hangs near the side of the cop, then switches to a calm, quiet voice) I don't even like ice cream, (switches back to Large Ham mode) OR KIDS! It says "Eye Screem" on my truck, not "Ice Cream"! Get it? 'cause I SCREAM!!! Look at me. (screams while spinning in circles) SCREAMING IS MY HOBBYYYYYY!!!!!!.
The Faceless: She is only ever seen from the legs down. Parodied to its logical extreme in the pilot episode when it is revealed that Mom and Dad are literally just two pairs of legs with no upper bodies.