It can smash concrete blocks with its kicking attacks. The one with the biggest crest is the group leader.
(From Bulbapedia) Scrafty is a bipedal, lizard-like Pokémon. It has oval, wide-set eyes with small pupils and gray eyelids, as well as small nostrils and a wide mouth with bared teeth, giving it the appearance of a permanent sneer. It sports a red crest on its head, similar in appearance to a mohawk. Baggy yellow skin hangs off its shoulders, falling halfway down its back. Scrafty's body is orange, with thin arms and a gray, scaled belly. Its lower body and tail are covered by loose yellow skin resembling baggy trousers. On its tail is a single red scale.
Scrafty is powerful enough to kick through concrete blocks, and can also spit acidic liquid from its mouth, which it does to taunt opponents. It can protect itself while attacking by pulling up or folding the loose skin around its waist. Scrafty lives in groups with other members of its species. Groups determine hierarchy by crest size, with the Scrafty having the largest crest becoming the leader. A group will attack anything that comes within its territory. Though often coming off as rude, it takes good care of its loved ones and its turf.
(From Bulbapedia) Scrafty appears to be based on a lizard. With its red spike mohawk, molted skin "pants" and "hoodie", Scrafty also seem to encapsulate stereotypes of various urban youth subcultures of the past several decades, namely hip hop and punk.
(From Bulbapedia) Scrafty is a combination of scrappy (to be fond of fighting or competing) or scraggy (thin or scrawny) and crafty (being skilled at deceit to achieve one's goals).