Li'l Killer is a baby chicken with a fearsome personality at Hebe Jeebies who was abducted by Percy Jackson, Annabeth Chase and Grover Underwood.
The Senior Year Adventures[]
The Chalice of the Gods[]
While traveling through Hebe Jeebies, Percy Jackson notices Li'l Killer amongst the other chickens in the hen house.
After Hebe deages the group back into eight-year-olds, Annabeth Chase comes up with Plan Chick which involves her and Percy abducting Li'l Killer while Grover Underwood distracts all of the adult chickens. Li'l Killer doesn't take kindly to this and viciously bites Annabeth in the finger before enjoying the food scraps when the group locks themselves in the kareoke bar. After singing fails to appease Hebe, Annabeth initiates her backup plan which involves Hebe's own powers causing her to deage into a baby due to Hebe's need to be the youngest person in the room which she isn't with Li'l Killer present. After the demigods and the satyr reach a deal with the goddess of youth, Grover returns Li'l Killer to the hen house, allowing Hebe to restore both herself and the group back to normal.
| The Senior Year Adventures | |
| Books: | The Chalice of the Gods | Wrath of the Triple Goddess |
| Main Characters: | Percy Jackson | Annabeth Chase | Grover Underwood |
| Secondary Characters: | Eudora | Hecuba | Gale | Sally Jackson | Paul Blofis |
| Minor Characters: | Naomi | Barbara | Elevator Security Guard | Blanche | Lucius | Margaret | Sparky | Li'l Killer | Mrs. Foray | Dr. Samuels | Dr. Sharma | Peter Stuyvesant | Mrs. O'Leary | Chiron | Connor Stoll | Clovis | Harley | Valentina Diaz | Juniper |
| Gods: | Ganymede | Iris | Hebe | Elisson | Poseidon | Zeus | Demeter | Hera | Hermes | Athena | Geras |
| Titans: | Rhea | Kronos | Hecate |
| Mythical Creatures: | Nereid | Nymph | Horned Serpent | Hellhound |
| Related Content: | Rick Riordan | Percy Jackson and the Olympians |