|Relations||Fintan Muldoon (brother) |
Colm Muldoon (brother)
Peg Muldoon (sister)
Liam Muldoon is a Goblin and one of the Muldoon Siblings.
Not much was revealed about his past, but he and his siblings encountered Skulduggery Pleasant and claims that he was the one who turned them into goblins. This causes him to hold a grudge against Skulduggery.
He and his siblings kidnap three babies in exchange for gold. Valkyrie and Skulduggery manage to defeat them and bring the babies back safely.