Episodes suggesting a friendship
In "Lick Your Way to Freedom", Grassy tries to talk to Blocky but he can't pronounce respected, so Basketball helps him pronounce it. Basketball agrees to having 8-Ball as the new team leader due to Golf Ball disrespecting Grassy.
In "Return of the Rocket Ship", Basketball wakes up from her nap after hearing Grassy shout and asks if he needs anything. Later, Basketball talks to Grassy about how unfair it is that Golf Ball suddenly doesn't trust her, to which Grassy just responds "I'm Grassy!".
In "You Know Those Buttons Don't Do Anything, Right?", Basketball leaves pre-Are You Okay to make a team with Grassy and Robot Flower. Grassy can also be seen sitting on Basketball many times throughout the episode.
In "The Worst Day of Black Hole's Life", Grassy can be seen sitting on Basketball when Two starts the challenge and when everyone asks Robot Flower her opinion on shapes, with Basketball smiling at him in the second instance. During the challenge, Basketball compliments Grassy, Bell, and Snowball for their stacking, Grassy says "Yaaay!" in response. At the end of the episode, Snowball points out that Grassy did a good job in the challenge and Basketball agrees.