Tell us more things about your Rumble! They’re adorable, amazing design.
ONE ORDER OF VOE'S NONSENSE COMING UP!/pos
Firstly my art, then the expo!
1!) I headcanon that Rumble when it comes to art personally likes working with clay (he prefers hand/Servo work don't ask them to use a wheel it will not result..well for the surrounding area..but also he'll steal some poor souls Wheel and not like an actual potters wheel, you'll need to tell them these things he takes things too literally sometimes/pos) also just because of the sensory feel n stuff. Clay (but also some Cybertronian version if they have a soil mixture equivalent) provides a pleasant texture that messing around with is just soothing to the brain.
-will get an RBF while working but internally they are just full of glee because the serotonin alone and contentment they feel while spacing out during their claywork is just perfectly satisfying. (Unless actually needed please don't interrupt rumble till he's reached an inspection stage, he'll feel irritable at first otherwise if you snap him out of it too early and disrupt his process, but also just he enjoys a momentary disconnect from reality and does not like abrupt plug ins back to it)
2!) When not making art and not getting enough various forms of input while trying to remain focused (like whole patrolling or smthin and it's too quiet, or it's not quiet but it's not loud enough ) unconsciously begins humming solfege, and will loop front to back with this a couple times (Low Do to High do then back down to Low do)
And will only sometimes realize in middle of this without outside mentioning of this that he's humming this..upon realizing what he's done he's a little embarrassed as he tried to recollect how long they've been doing this and if anyone heard them.
If not and the initial panic has worn off they usually end up resuming about 5 minutes later if things around them still aren't loud enough