kugo ??? can provide the name b4 they awaken? 
silia @ wind witch even she attack not so powerfull, but her skill quite usefull in some situations, can block opponent @ boss to use buff, example boss buff to increase atk power, or def. or blocking Rina to use her shield. for me she better keep it, dont choose her becomes food.
wind epikion priest can use so far for biginner, after that not so usefull. healing just so so.
fire inferno, worth to pump in kaw kaw, he attack very painfull, high attack power but low HP a.k.a glass cannon
martial cat = i no comment on this. but all my cat becomes my food.

this is just my 5cent suggestion n feedback. not 100% true one 
1 mobs useful to me, not 100% useful to u.
1 mobs unuseful  to me, not mean 100% unuseful to u also.