Charas soul was absorbed by asriel and lost when asriel died. Their soul isn’t counted in the seven humans to break the barrier. The omega flowey and the snowball game reveal which souls were which

Each of the fallen humans left something behind. it’s revealed through the omega flowey stage

This is the soul of the human who left behind the faded ribbon and the toy knife in the ruins. They didn’t get very far and it was probably the first one after chara who fell. Toriel wasn’t there to save them and that’s why she moved to the ruins. 

This soul was held by the child who probably had the tough glove and the manly bandanna found in the snowdin area if the snowball game is any indication. You are the kind of person who rushes fists-first through all obstacles. THey were a fighter and managed to get farther than the first child before falling.

Hopping and twirling, your original style got you through.That’s what the snowball game says about the blue soul. That combined with the ballet shoe theme of omega floweys part implies that this is the soul of the child who had the small tutu and the ballet shoes found in the waterfall area.

The intulectual look of this and the description of the ball game,  even when you felt trapped, you took notes and achieved the end of “Ball” indicate that this is the soul of the child who owned the worn notebook and cloudy glasses found in the waterfall area.

Your care and concern for “Ball” brought you a delicious victory. The use of the word delicious and the cooking motif of this part of the battle indicates that this soul is that of the owner of the burnt pan and stained apron. they made it all the way to the hotlands before falling. This child was a cooker

The revolver theme of this part and the description of the yellow soul,  Your sure-fire accuracy put an end to the mayhem of “Ball” Could be a reference to the empty gun bought by bratty and catty. The accompanying defense item is the cowboy hat. This kid was basically mike tv from willy wonka.