Absol / Mega Absol
Learns Baton Pass and Swords Dance, and if you invest 252 HP, it can take some hits.
Celebi
Learns Baton Pass and Swords Dance, can only take neutral or restistant hits though, horrible typing.
Mienshao
Learns Baton Pass and Swords Dance, has a good HP stat to take hits.
These three are the only ones (except for Mew) I would use in UU, it just comes down to which one synergises best with your team.
Source - Showdown's /dexsearch.