Let's just get on with it.

Top Row:

Grandmaster Claire: Grandmaster, Arena Manager

Blooming Tiff: Wind Healer, Tower Guide

Avenger Reed: Assassin, Boss Keeper

Starlight Ellie: Guide, RNG Goddess

Lovely Lunith: Seductress

Middle Row:

Mummy Cyanthia: Mummy

Wolf Spirit Keito: Wolf Spirit

Scythe Ripper: Halloween Psycho

Scarecrow Kilios: See Kilios in the Four Star Units Chapter.

Witch Melody: Witch

Bottom Row:

Just see Cykopath, Sylph, DJs X, Eve and Phantom.