Gromp begins fights with 100% attack speed and full damage, decaying over 5 attacks.
Frogs are amphibious creatures that inhabit specific magical locations, such as Summoner's Rift. Although frogs are a common sight, an amalgamation of a frog specimen and a magical anomaly borne the monsters known as Gromp. These monsters are hardy and tough and its hide can deflect the sharpest of blades and the strongest of spells. It is said that killing a Gromp with the spell of Smite grants unto the victor the creature's poisonous presence, giving even the fiercest predator pause.
Killing the Gromp grants 115 − 172.5 (based on monster's level) experience.
Having a jungle item () grants an additional 50 experience, and for each level below the Gromp's, you are granted an additional 50 experience. The first large monster killed grants an additional 120 experience.
Totaling between 165 and 222.5 − 572.5 (based on level difference)
Without slows, Gromp has a movement speed of 330. When its patience runs out its movement speed is increased by 20%, to 396 [330(+66)].
Gromp's full name is Lord Grompulus Kevin Ribbiton of Croaksworth.
Gromp is nearly identical to the now removed Wight.