It's pretty easy to roleplay all of the DLCs for my Legion character. Considering my character's back story isn't about Legion mostly. He's a really poor medical scientist who comes from NCR territory who admires the Followers but believes them to be weak. He doesn't know about Legion very much and it's really easy to roleplay Honest Hearts. Make it before my character has a really deep involvement with Legion so I have no reason to kill Graham.

Dead Money - Poor Scientist. Had to steal stuff to get medicine and equipment. An opportunity to begin again in the Sierra Madre? Count him in!

Old World Blues - Still a scientist. Caesar's teachings of technology weakening humans already sank in. But still, a satellite? Can't keep the spirit of a scientist away

Lonesome Road - To have an ending to things. It's not just amnesia. I roleplay that my character had such a traumatic experience in the Divide because of the events that happened there so his brain simply blocked out all memories of that period.

RPíng all the DLC's is pretty simple for me as well, he's an ex-NCR Ranger, making a living off whatever he can scavenge and hunt. He also takes on odd jobs, and sometimes goes Legion-hunting for the hell of it.. That said, he's generally a good bloke, and isn't afraid to lend a hand, or his rifle, where it's needed.

DM- He stumbled across the bunker whilst on one of his little Legion hunts, next thing he knows he's waking up in front of a fountain with a bomb around his neck.

OWB- Investigating the crashed sattelite to see if there's anything salvageable, winds up in Big MT.

HH- Simple, he needed the caps.

LR- He heads off in search of a friend of his who went missing in the Divide on what should have been a fairly routine scouting mission. (This friend is the dead Ranger we find in the tunnel where we first encounter the Tunnelers.) After he finds his friend, he heads further into the Divide to search for answers.