Cala Maria is said to be playful, but not to be trifled with. Cala Maria seems to be a flirty and vivacious being. She appears to have some interest in Cuphead and Mugman as seen in her intro where she makes a sweet "yoo-hoo!" sound while fluttering her eyelashes and making a pose, and in the ending sequence in which she is staring at the brothers (although, as a siren, she could only be doing it to catch them off-guard) Cala also seems to have a strong connection with fish and aquatic life.