Abigail Marge is a blue fish with a purple dress and black shoes that appears in many episodes. She is married to Nat Peterson, and has been seen with Dale. She is also known to be Susie and Billy's stepmother. She is very similar to Martha Smith, but the only differences is her lips and her fin. She usually is asking Mr. Krabs for a refund.
- "Trying to keep in style, huh?"
- "Hey, up in front!"
- "Hooray!" (as revealed in "Pickles," "The Pink Purloiner," and "Sun Bleached")
- "It is the most flavoristic sensation my still developing taste buds have ever experienced!!!" (as a kid in "Friend or Foe")
- "That's what I got you!" (male voice on TV)
- "Well no wonder, it's all old and dried out, now put that thing where it belongs, in the garbage."
- "A nudist FERRET!"
- "Never mind to you, Susie, it's already too late for that."