I'll probably make this with the others in the future.

One of the headcanons have to do with his looks and the others are scenarios.

Headcanon - Safety Violation:

In the making of Grise, the engineers made his pants too big since they miscalculated/measured(?) his legs. They decided to make a joke story that his old pants(ROOTS) were getting too small, so he went to the store to buy some new ones. Unfortunately, they ended up being a tad bit big. He was able to make it fit around his waist but liked how his pants looked from the botton, so he didn't fold it from the bottom.

(People were surprised how he never ended up tripping because of the bottom.)

Headcanon - ROOTS:

All the animatronics/puppets have their own section they can go to, Grise having his brick house. He sleeps after eating, which is in the afternoon. If you're a kid or teenager(or maybe an employee that is likeable) and disrupt his sleep, he'll open the door and give you some food, mostly candy. However, if you're an adult or an employee that he doesn't like(Especially you Ove), he'll just look at you when he opens the door, blinks, then slam the door on you.

(He can obviously move by himself so in order to get him out his house, an employee that he likes will ask him to go to the stage.)

Headcanon - Cartoon:

Once he was making himself some eggs for breakfast, it was on a day Kou babysit Eggling. On that day, he was about to fry Eggling since he was close to the stove. Kou was fortunate to grab him in time. Grise did notice Eggling at the last second, so he just stared at the eggs frying, wondering how Eggling and Kou got there.

(Would be a scene in the Babysitting episode, credit to OtisLePoOtis, I didn't come up with the cartoon headcanon but it was a silly scene he described for the episode)

Btw, for the second image, SV stands for Safety Violation (First Bondee's Barnyard game) while R stands for Roots(Second game).