Crandal McTuckle
Crandal McTuckle is a leprechaun, however instead of living in the Mystical realms he has been living in our world, based in Dublin, since leprechauns are part of Irish mythology and folklore. Crandal for some reason was on a mission to try and reach Graeme and the Spirit of Fidelity, after learning of their impending arrest by some unspecified agency, with the help of Special Branch. He hets very irritated of stupidity, especially a relative who drew the attention of this unknown agency to the area where Graeme and the Spirit of Fidelity were living.
Crandal actually knows more than he is prepared to say and packs a 9mm automatic hand guns, behaviour not normally associated with leprechauns. This may be because he is a member of
G2 The Irish Military Intelligence Service
There may or may not be other aspects about Crandal, which may or may not come to light later
Edit - Add in the bit about G2 involvement
Edit 2 - Spoiler
Crandal was killed by the Egyptian god Set