High Rise grew up with a troubled past, though it is never said why or what he did. He at some point joined the Railroad and is trying to work off the "misspent youth," and providing a safehouse at Ticonderoga for synths and other Railroad agents. High Rise is held in high regard by other Railroad agents, such as Deacon. He dies during Operation Ticonderoga, after Institutecoursers raid the safehouse.
In the game's files, High Rise's voice type is that of Low Road Franklin, another character that was credited as being voiced by Avery Kidd Waddell. This, in addition to several AI packages in the Creation Kit, indicates that High Rise's original name was Low Road Franklin, or he was meant as a replacement for Franklin and the scripts simply maintained Franklin's name.