|First Appearance||Sanctuary (Part 1) (mentioned)|
|Allegiance||2nd Massachusetts Militia Regiment|
Ryerson was a fighter in the 2nd Massachusetts Militia Regiment.
Ryerson was one of the fighters in the 2nd Mass. When Hal Mason speaks to his father Tom Mason, he is asked if he should be on sentry duty right now, but Hal mentions that he got Ryerson to take his watch.
It is assumed that Ryerson was one of the fighters that went to attack the Boston tower, and was killed by the mechs and skitters.