Gikwang:  A lot of body rolls with sexual facial expressions + American Dance.
Doojoon:  The exaggerated dance movement, randomly swaying from side to side + derp facial expressions.
Yoseob:  Combination of random dance steps, sometimes includes hat tricks and bboy moves, cute facial expressions.
Junhyung: Smooth & flowing body movements, seemingly dances with no effort, perfect body rolls, sometimes adds in a bit of bboy and popping and locking.
Hyunseung:  Smooth and stylish yet powerful dance moves, can be highly sexual or highly random to reflect his 4Dness.
Dongwoon:  Random popping and locking, sometimes gets intimate with the other members with the random body rolling against them, sometimes copies what other members do but adds his own flavour to it, ends up running away embarrassed.

DOOJOON: The guy that never changes his hairstyle; looks strict
HYUNSEUNG: The guy that looks like a GODDESS/GIRL
JUNHYUNG: Grumpy guy that laughs like a shy girl
YOSEOB: The guy that looks like a 5YEAR OLD CHILD
GIKWANG: The short muscle man with eye smile
DONGWOON: The Arab guy

[Source: Jun Hyung (용준형) ]

Doojoon : Hit the person nearest to him.
Hyunseung : Leans back.
Junhyung : Cover his mouth.
Yoseob : Gets up, walks over and claps.
Gikwang : Eyes smiles so much until you can’t tell if his eyes are open or not.
Dongwoon : Drops to his knees.

[Source: Jang Hyun Seung 장현승 ]