Listing alphabetically.
Amazons, The
Mutant Group
Belief: "Might make Right"
Background:

Cologne
Mutant <Beta>, Female
Amazons
Codename: <None>
X-Factor:
Parents: Female and Male Amazons (Mutants, Gamma-Class)

Heaven's Swords
Mutant Group
Belief: "Mutants are the Royal Line from Heaven"
Background:

Hibiki, Ryouga
Mutant <Beta>, Male
Sons of the Rising Sun
Codename:
X-Factor:
Background:
Parents: Mr and Mrs Hibiki (Humans)

Kuno, Kodachi
Sentinel Mutant Hound (Alpha), Female
Owner: Ranma Saotome
Codename: Black Rose
X-Factor:
Background:
Parents: Principal and Mrs. Kuno (Mutant [Psi, Gamma])

Kuno, Tatewaki
Mutant <Beta>, Male
Heaven's Swords
Codename: Blue Thunder
X-Factor:
Background:
Parents: Principal and Mrs. Kuno (Mutant [Psi, Gamma])

Mousse

Mutant <Beta>, Male
Amazons & Sons of the Rising Sun
Codename: <None>
X-Factor:
Parents: Female and Male Amazon (Mutants)

Musk Dyntasy
Human/Martial Artists/Ki Masters
Belief: "The goal of life is to be one with everything"
Background:

Nu, Rei
Human/Sentinel Prime - Alpha-Class, Female
Operation: Zero Tolerance; Japan Theater
Background:
Parents: Japanese Couple

Saotome, Ranma
Human/Sentinel Prime -- Omega-Class, Male
Operation: Zero Tolerance; Asia Theater Command
Background:
Parents: Genma and Nodoka Saotome (Human)

Sentinel Mutant Hound
Processed Mutant
Belief: "Resistance is futile."
Background:

Sentinel, Prime
Technological Organic Entities
Belief: "To protect humanity from the mutant menace"
Background:
Vulnerability:

Shampoo
Mutant <Beta>, Female
Amazons & Sons of the Rising Sun
Codename: <None>
X-Factor:
Parents: Female and Male Amazon (Mutants, Gamma)
Great-Grandmother: Cologne (Mutant, Beta)

Sons of the Rising Sun
Mutant Group
Belief: "Mutants and Humans should live together in peace"
Background:

Tendo, Akane
Mutant <Beta>, Female
Sons of the Rising Sun
Codename: Crimson Dynamo
X-Factor:
Background:
Parents: Soun and Mrs. Tendo (Humans)

Tendo, Kasumi
Human/Sentinel Prime -- Beta Class, Female
Operation: Zero Tolerance; Asia Theater
Background:
Side-Effects:
Parents: Soun and Mrs. Tendo (Humans)

Tendo, Nabiki
Human, Female
Parents: Soun and Mrs. Tendo (Humans)