Just managed to solo baron with 
(don't worry i had all my damage items), and it was quite close :)
but it just got me thinking, who else can solo baron? any level, any items.
I've seen heimer do it with like 2 items and i'd imagine Udyr could (but idk if his damage would be enough)
I don't know about tank/phoenix, but tiger Udyr can solo baron with full build easy.
I've also seen Lucian, Vayne, Aatrox, and Fiora solo baron. Lee Sin, Jinx, and Jax could probably do it though I've never seen it.
I have seen a fiora solo baron too, which is completely stupid, i thought the baron changes were intended to get rid of soloing him.
Shyvana can do it with BOTRK, Hydra, and BT whilst remaining at full health.
I've done it with Yorick. And my friend did it with Master Yi.
I think the easiest baron solo I ever saw was pre-nerf Warwick doing it at 16 with one item missing in my build. Full health. Had a Feral Flare, Wit's End, BOTRK, Frozen Heart, and a Spirit Visage. Hadn't bought boots yet. I did it again later that game after adding a zephyr to my build.
I've done it with late game Jinx. BT, IE, PD, Boots, LW. Don't think I had a last item yet, but I've done it several times with at least these items.
