Grub Kelp is an elf, and younger brother of the famous Trouble Kelp. He is in the first four books.

Grub was the only member of LEPretrieval One to survive Butler's attack during the Fowl Manor Siege. This was by luck, however. Grub finds fault in everything, except himself. He is very particular about his possessions, and many people believe him to have a mental disorder, though this is highly unlikely, as he has a decent vocabulary and shows no real signs of mental sickness, however surprising this is.