The Romper is a powerful ape-like monster in Silent Hill that attacks with a body blow and pins down its victim. These monsters leap or "romp" around at high speeds while "laughing" dementedly, making them hard to avoid.
The Romper appears to be a humanoid monster with a primitive physique. The beast is relatively muscular and has front arms that are longer than its legs, suggesting its supposed-to-be-human nature. It is covered in dull-brown that skin resembling a coat. It seems to have some sort of belt wrapped around its massive neck. In its artwork, it appears to have a two large staples or metallic wire for eyes. It has tube-like appendages dangling from its slit-shaped mouth, which are presumably for tasting.
It is best to avoid Rompers as they are capable of easily outrunning Harry Mason and trampling him, inflicting much damage, especially if one is to bite at his throat. If necessary, the shotgun and the rifle are the best weapons against them. However, given time and patience, the player can take them out with a handgun. Melee confrontation is strongly advised against as the Romper can simply jump onto Harry before he can get a hit in.
If Harry is being pursued by them, running in a "zig-zag" like manner back and forth will confuse them and keep them at bay. Running in a straight line will lead to Harry being more likely to be grappled.
The Romper is a manifestation of Alessa Gillespie's fear of adults and her dislike of people older than herself because of what the Order did to her. This possibility is supported by the Romper's overbearing character, such as their incredible ease with knocking Harry over and biting at him vigorously. The Romper has a tendency to "trap" its prey beneath it, pinning Harry down and attacking roughly. This gives the beasts an authoritative aura.