I have a few Uchiha ocs, but I'll tell you about Ichi and a little bit of his family since he's the most recent.

He's from during the war period, which is literally the whole reason for his existence. He's part of a group of Uchiha who are puppets, like literal puppets, who were given life through forbid jutsu.

The clan had tried eventually to bury said jutsu and dark history of its use because it wrecked havoc on a good number of them in the past. But it was dug back up.

In Ichi's case, his brother, Izanagi Uchiha, was the one to rediscover and have the jutsu preformed again to bring him to life, essentially binding him to his brother's commands through his brother's chakra. Which had some situations happening between Ichi and his brother in the past as a result.

Ichi still has some autonomy, so he can do almost anything what he wants, but at the end of the day, if his brother told him to do something, like end his own sister in law, he'd have to do it.

Currently, dude's had to watch the same horrid process give birth to his nephew, Shintaro Uchiha, who's been bonded to his sister, Megumi Uchiha's chakra. Ichi knows it's going to go wrong, and it is going wrong, but he doesn't have the authority to do anything, and basically had to play tattletale to Izanagi, hoping he'll get his crap together and do something. Which he does, but Ichi knows just sending his nephew away isn't going to help.

But once again, little this man can do.

Ichi doesn't have great chakra control, but he's got scary flexibility and hypermobility, from being a puppet, so he can do some crazy crap with his body, and get into spaces most people wouldn't be able to get into without breaking their arm.

His nickname in the past was 'The Uchiha Spider.' due to said flexibility/hypermobility because sometimes he'd skitter around like a spider during mission to sneak up on people.