personality: Astro might not take the lead in many conversations, but he interacts with his fellow Toons normally. Regardless, he's always lending a helping hand (or four of them) when it comes to his dream manipulation abilities, ensuring they can get the dream they want. He enjoys peace and quiet and is a bit high-strung in relation to anything interfering with those two things, and is even standoffish, but he is by no means annoyed with the action his friends cause (at least until Connie Render in particular disrupts his privacy). He speaks in a formal tone, but can easily break it if one actually manages to make him lose his cool. But beneath his oddly quiet, formal exterior, he might have a playful, teasing side. After all, when he suggested to Rodger Render that he tries to get into extra hobbies, the tone Astro uses being more of a mocking one.

He's open to helping his friends with their issues, dream-related or not, like with Scraps Render , though he'll back off if his help is rejected or diverted. In an interaction with Bassie Render , he attempts to reassure her, causing her to have an outburst, thus leading to him quieting down. Although with Glisten Render he does get a little insistent on discussing any problems, he quickly caves in to Glisten's request to put it on hold.

Astro appears to be camera-shy and dislikes being the center of attention or stared at, as seen in his interactions with Coal Render and Looey Render , the episode "Astro in Stage Fright", and the Gardenview rules disallowing photography of him.

While a kind and friendly Toon, Astro is shown to be slightly irritated in some conversations, or doubting some of the Toons. Still, he can generally maintain a calm demeanor and is able to manage his emotions. He appears to be pestered and somewhat annoyed by Vee Render , unbeknownst to her, when she checks in on him. He sometimes dismisses Toons' attempts to help him or offer him something, shown in interactions with Cosmo Render and Squirm Render , instead favoring taking care of others.

Another core trait is Astro's skepticism towards some of the Toons and their eccentricities, not being that easy to get along with in such cases, as shown in his interaction with Eclipse Render , where her boisterous and unusual attempts to befriend him make him uncomfortable. He also finds it odd how fixated Finn Render and Shelly Render are on their specific interests, that they dream about them constantly. His skepticism gets to the point where he needs to double check his thoughts, not trusting his own mind, shown in the interaction with Looey. Even things like doing nothing appears to bring up skepticism of wanting a new dream, in Astro's perspective, shown in the interaction with Rudie Render .

Appearance: Astro is a light aqua Toon with his face resembling a waning crescent moon. The right side of his face is pitch-black with a white star-shaped eye. He wears a cornflower blanket wrapped around his torso, obscuring his four arms to the point that they can be just seen as faint furrows in the blanket. However, his blanket is still short enough that it reveals his legs that are the same color as the crescent moon side of his face. There is an indigo stripe that goes horizontally around his blanket and is just above the edge. Underneath his blanket, he wears medium black shorts that are barely visible due to the blanket covering them, but previous versions of him never had the shorts. He wears a dangling sleeping cap the same color as the stripe on his blanket, with a light blue trim and a light blue pom-pom at the tip. During Blackouts, he emits a blue glow that changes color depending on the Skin equipped.