Suggestions by @laylachat

Hisui E. Fiore

as Green Hair (Female) in Hair Salon

Doma (Demon Slayer)

as White Hair (Male) in Hair Salon

Kokushibo

as Red Hair (Male) in Hair Salon

Suma (Demon Slayer)

as Black Hair (Female) in Hair Salon

Muzan Kibutsuji

as Black Hair (Male) in Hair Salon

Kurome (Akame Ga Kill)

as Black Hair (Female) in Hair Salon

Ms. Joke

as Green Hair (Female) in Hair Salon

Brandish

as Green Hair (Female) in Hair Salon

Nakime

as Black Hair (Female) in Hair Salon

Nakime

as Demon in House of Horror

Nakime

as Cyclops in Mystical World

Lilia Vanrouge

as Striped Hair (Male) in Hair Salon

Lilia Vanrouge

as Witch in House of Horror

Sebek Zigvolt

as Witch in House of Horror

Sebek Zigvolt

as Green Hair (Male) in Hair Salon

Silver (Twisted Wonderland)

as Grey Hair (Male) in Hair Salon

Silver (Twisted Wonderland)

as Witch in House of Horror

Malleus Draconia

as Witch in House of Horror

Malleus Draconia

as Black Hair (Male) in Hair Salon

Rook Hunt

as Blonde Hair (Male) in Hair Salon