Astro is a quiet Toon who seems to only willingly socialize with ones he is closer or more comfortable with. He enjoys peace and quiet, and seems to at least mildly dislike anything interfering with those two things. Astro does genuinely care for the Toons around him, though he can come off as standoffish at times. A lot of Astro's character also seems to revolve around outer space and sleep, given his appearance, the floor based off of him, and his interactions with other Toons.