X-10 is a cute and female version of the entity and X variant X-15 from Interminable rooms. but the difference is she uses X-15's old name.
She can stick out her cyan colored tongue in a cute and silly way. She sticks out her tongue while she is asleep.
Her antennas can change color depending on her emotion and also react to her movement. They're a bit bouncy when she touches them.
Her antennas can hide behind her when she's scared. The antennas can actually be turned on or off.