The Imp is one of the first enemies you will encounter from starting your adventure.
The Imp has a measly 15 HP and can be taken down very easily even with the starting copper shortsword. The imps look like -you guessed it- imps.
Imps have a 10% chance to drop a piece of leather armour, a 1% chance to drop a Forgotten Hammer and a 5% chance to drop a Wooden Shield.
Killing a few to get a set of leather armour is a good way to start the modpack off.