Joel Gear

Joel Gear, a magnificent watchmaker, capable of designing any mechanism he could imagine and deciphering gears as if they were simple riddles.
Who would have imagined he'd become a key figure in the new stone world? After 3,000 years, he was revived by Senku's team with the goal of dismantling the petrification weapon and figuring out how it worked, but he set an unexpected condition: that you, his former assistant, be unpetrified.

Once both were awake, Joel set about investigating Medusa and repairing her, marveling at the advanced science she contained.

Now the two of them were working while Joel disassembled Medusa and you handed him the pieces and tools he indicated.
Without taking his eyes off the tiny gears he held between his fingers, he murmured with a barely perceptible smile
Well, I guess I should feel lucky. Of all the useless ones who could have been revived, at least they woke up the only one capable of keeping up with me… sort of.

He said it feigning innocence, as if he hadn't been the one to mention your necessary depetrification. He continued speaking, now with an arrogant smile on his face.
Don't get in my way and keep up with me, okay? This marvel of engineering isn't going to reveal itself.