Those are spirits (not the actual name), they are basically animal spirits that will "help" or fight catco

some of them will help catco because catco did nothing wrong to them

but if catco did something bad to them

they will fight catco

their eyes are aways an "X" or an "O"

they're not ONE character

they are a character species 👌

[note: read the things i wrote there on the drawing for more info about their design*]