Lunella is a 9-year-old Inhuman girl who is described as the smartest character in the Marvel Universe[3] and is paired with Devil Dinosaur, with whom she shares a mental link.

In the Savage Land, Devil Dinosaur and his enemies, the Killer Folk, are transported to New York by a temporal vortex, which also kills his companion Moon-Boy.

[6] Lunella later obtains the Nightstone, identifies it as a Kree Omni-Wave Projector, and intends to use it to stop her latent Inhuman genes from activating.

[7][8][9] She comes into conflict with Amadeus Cho / Totally Awesome Hulk and the Killer Folk before being caught in a cloud of Terrigen Mist and enveloped in a cocoon as her body mutates.

Lunella was at first relieved she had not changed physically, but was dismayed to learn her Inhuman power caused her consciousness and that of Devil Dinosaur's to switch.

Devil Dinosaur proceeded to make her even more ostracized at school due to freaking out in class and attacking other students while Lunella rampaged through the city.

After consulting experts, Moon Girl, Hulk and Devil Dinosaur encounter Mole Man, who was attacking the city with a group of monsters.

Meanwhile, Doctor Doom is surprised to discover that Moon Girl is considered the smartest person on Earth and vows to prove himself superior.

While tracing Doom's location, Moon Girl and Devil Dinosaur arrive at the Sanctum Sanctorum and are found by Doctor Strange.

[17] Arriving at an abandoned mall, Moon Girl re-engineers a Cerebro helmet with the Omni-Wave Projector to locate Doom, only for her and the X-Men to travel back to the 1980s.

She then encounters an army of Doombots, along with Thing, Hulk, Ms. Marvel, Ironheart, Doctor Strange, Kid Kree and the Killer Folk, who went to her aid after being recruited by Lunella.

[19] Lunella then receives a call for help from an alien girl named Illa and, after building a spaceship, goes to space with Devil and crash lands on a moon.

Moon Girl and Devil manage to find Ego the Living Planet and reunite him with Illa, while the Doombot discovers that the Lunella robot is acting independently.

[26] Moon Girl, Devil Dinosaur, and other heroes later encounter other monsters until the Leviathon Queen is defeated by Kei Kawade and his new creations.

While trying to break Devil out of his cage, Moon Girl meets Leer, the Inhuman Karnak mentioned, who knocks her unconscious when the Helicarrier crash lands.

[28] In Gwenpool #25, Moon Girl, Devil Dinosaur, and the Power Pack briefly bust through the wall of the Marvel Universe's versions of Gwen's parents while she explains where she and her brother came from.

[29] Moon Girl starred in a three part mini-series of one-shots guest featuring Spider-Man (Miles Morales), the X-Men, and the Avengers which had Devil Dinosaur kidnapped by High Evolutionary.

For some reason she sneaks into school and tried to steal Lunella's file, but is foiled by Moon Girl who in the middle of the fight trades bodies with Devil.

Moon Girl discovers that OMG Olivia is actually part of the Kree race and directly descended from the scientists who created the Inhumans.

In the hopes of reclaiming her family glory, she plans to use nanites embedded in her hair care products and create an army to do her bidding.

[31] As a result of her Inhuman heritage, Lunella possesses the ability to switch consciousnesses with Devil Dinosaur whenever she is angry or extremely hungry.