Hagrid
Greystoke
Wish I was better at coming up with names. I’m sure he’s breathtakingly lovely!
As for adjusting: Let him come to you, not you to him. Give him plenty of hay and unlimited pellets of good quality. Let him explore his and your home at his own pace. Start potty-training right away by putting poop + sth that he’s peed on in a litter-box. Place the litter-box where he already has chosen to pee, that’s ususally the best way. They opt for a place, not the litter-box per se.
Offer him a hidey-house made of a cardboard box etc with 2 entrances/exits, a place where he can seek refuge if he feels the need. They very often want a place that has a roof (for rabbits, threats often come from above, so it’s an instinct for them to seek out places that have “roofs”). Rabbits also like to lie on top of things that are elevated off the floor.
I hope you will figure out how to post pics of him!