Elf Squad is a group of characters introduced in Metal Shadow Prelude. They are a squad of Agents led by Agent Elf, the top unit in The Agency. They are initially comprised of Agent Ghost, Agent Ziare, and Agent Lair, in addition to their leader. Agent Delta joins them as a freelance Agent in the Prelude. Throughout the Prelude, they see many roster changes, ending officially comprised of seven members; the additional ones are Agent Rail and Agent Ex. Elf Squad was the first team to find Noa Rylie when she went on the run.

The extended Elf Squad lose their Agent jewels throughout the hunt for Noa. Anikae later explains that all seven of them had previously been the generals of the original Liberation Front, and the fact that they reunited as Agents must have been an act of fate.