Q is a godlike being and a member of the Q Continuum, a race of extremely powerful beings from another realm.
Powers and Stats
Tier: At least Low 2-C
Origin: Star Trek.
Classification: Godlike being, member of the Q race.
Attack Potency: At least Universe level+ (Created alternative timelines in Tapestry, All Good Things, stated to be from a dimension beyond human comprehension).
Lifting Strength: Unknown
Striking Strength: Unknown
Durability: At least Universe level+ (A suicidal Q cannot kill himself, even with the Big Bang).
Weaknesses: Weapons made by other Q.