Ranger Andy is a retired Ranger living in his bungalow in Novac. He injured his entire body when a child dropped a grenade by his feet while he was clearing a building. He later injured his leg again by falling down the Novac motel stairs.
Remember that Ranger Andy is a Ranger, and therefore will see through any disguise you may use. If the player is 'Hated' by the NCR and hostile with them, this makes completing Old School Ghoul impossible.
Andy never leaves his home.
"You'll get the hang of that takedown. I had trouble learning it at first, too."
"Was. Was with them. That was back when my arm and leg used to work better. I still like to pretend I'm a Ranger, though. I'll check in with the guys up at the station pretty regular on the ham radio."
Audio in the files for Fallout: New Vegas suggests that Gregory Alan Williams was at some point going to voice Andy, as there are many of Andy's lines recorded in his voice.
pcps3 After asking Ranger Andy about the station and going down to check it the station may not have been attacked at all. There will be a single ranger in the station talking about how he has too many medical supplies. [verified]
pcps3xbox360 There is a bug that will not let you speak to Ranger Andy and the screen goes in for a conversation but then recedes the reason is unknown for now. [verified]
pc This occurs after passing the Speech check to bypass the Ranger Station Charlie side quest, and the next time you talk to Andy; you can fix this by entering set "00084233".bRangerStationCharlieStage to 0 into the console). Alternatively, enter player.additem 000ccfc9 1 into your console. This will add a note to your inventory, allowing you to speak to Ranger Andy again and thereby initiating the Ranger Station Charlie side quest.
pcps3xbox360 When you bring Raul to Ranger Andy and talk to him he does not give a response and you are unable to talk to him and finish Raul's unmarked quest which makes it impossible to complete the quest. [verified]
ps3 If the above mentioned glitch of speaking with Andy and no dialog appears then exits immediately after retrieving the holotapes from Ranger Station Charlie, load to a save before speaking with Andy and head to the camp. Hopefully the camp will have been attacked and you can retrieve the holotapes. Then go back and speak with Andy to start his quest and finish it without receiving the chat glitch. Also received Raul's conversation upon leaving Andy's bungalow. [verified]
pc If you are playing the PC version and this bug occurs, you can correct this by using the console and typing the following exactly: set "000e61a5".MetRangerAndy to 1. This must be done in an indoor area. Transition to an outdoor area and Raul should initiate conversation. If that console command doesn't do the trick, try set "000e61a5".MetRangerAndy to 2 and pick his dialogue option about Ranger Andy.