"I hate to say I told you so, but... actually, I don't hate it at all! I told you so, I told you so, I told you so!".
-Oblina, about a mistake by Ickis
-Oblina's farewell line
Oblina is the deuteragonist, later true main protagonist of the series. She often bickers with Ickis, one of her two roommates. Oblina goes to the Monster Academy for an education. She is the brains of the group and is very well behaved, unlike Ickis and Krumm. Oblina treats Krumm very well, so much that once Krumm thought that she had a "squish" on him. She is a very hard worker.
Oblina comes from a wealthy monster family. She is shaped like a black and white, upside-down candy cane. Oblina is believed to be Gromble's best current student. One of her favorite methods of scaring humans is reaching within herself and pulling out her internal organs, and she has considerable talent for shapeshifting into various terrifying forms. She also has a talent for inducing nightmares in humans, by sticking her finger in their ear and tickling their brains while they sleep. Oblina is interested in reading and is very practical.
Despite their bickering, Oblina befriends Ickis and goes on lots of adventures with him. Her family has collected enough toenails to keep her living in the lap of monster luxury for life. But just because she is rich doesn't make her spoiled. She is always ready to help out her friends, especially Ickis and Krumm, when they find themselves in a scary predicament. Oblina is excellent at scares as well. Her slender form can contort and expand to frightening displays of teeth, lips and tongue that can turn just about any human's hair white and have them running away in fear. Oblina proves once and for all that "girl power" is alive and well, even in the monster world!
Oblina is a vaguely serpent-like monster, with a flexible body covered in white and black stripes. She has red and puffy lips and lots of crooked, spaced teeth, though she can willingly bare sharp fangs. Her eyes are green with black slit shaped pupils. She has eyelashes and four strands of hair atop her skinny head.
Oblina has appeared in most episodes of Aaahh!!! Real Monsters. Her first appearance was in The Switching Hour. Her last appearance was in Ghost Story, a crossover episode of Rugrats. Oblina has appeared in every episode except for Showdown and The Great Escape, the latter of which she was only mentioned.
- Her monster power is that she can shapeshift, pull out her internal organs and show her fangs.
- Despite her talent for gut-pulling, in the Pilot she expresses a dislike for the technique.
- Oblina is the only monster other than Slickis who has been shown to be able to completely change color while shape-shifting.
- An Oblina action figure was made for Mattel's Aaahh!!! Real Monsters line in 1995.
- She is played by the late Christine Cavanaugh, whose voice credits include Gosalyn Mallard from Darkwing Duck, Dexter in Dexter's Laboratory (Season 1-2), Bunnie Rabbot in Sonic The Hedgehog, and Chuckie Finster in Rugrats. Coincidentally, Oblina appeared in the episode Ghost Story.
- Oblina is the true protagonist of the series, because she had bigger plans than Ickis and knew the academy personally.
- Oblina has recently been confirmed to be a playable character in the platform fighter, Nickelodeon All-Star Brawl.
- In the episode, I Heard the Snorch Call My Name, she became friends with The Snorch when he got a beautiful voicebox.