I wasn't expecting such a positive response. Thanks, guys.
I looked back at my IRC logs and discovered that it's actually Brad who deserves credit for coming up with the name "Retroactive Man":
[00:15] hey kaufman... can you explain http://www.stripcreator.com/view.php?ID=101633 to me?
[00:16] he dammed the torrent without even trying
[00:16] oh... okay.
[00:16] you know, much of his crimefighting seems to be retroactive
[00:17] he always talks about what he did but he never does it... sort of
[00:17] uses the past tense a lot
[00:17] Retroactive Man.
[00:17] the power of words ;-)
[00:17] that's a great idea for a series, actually
[00:17] Retroactive Man will have come to the rescue!
[00:17] Ha ha,
[00:18] Subjunctive Man might have saved the day.
[00:18] I'm too tired to add anything to this.
[00:19] Double Negative Man might not haven't, etc. Please fill in the rest.
[00:21] Poor Subject-Verb Agreement Man save the day.
[00:24] Captain Monosyllabic says "Grrr." about your obvious rip-offs
[00:25] Captain Obvious gripes about Captain Monosyllabic stepping on his property
[00:25] Potential Lad could save the day.
[00:26] The day was saved by Passive Voice Man.
By the way, kaufman, even after you gave me that explanation, I somehow still didn't really get that strip until earlier today. Now that I do, I think it's pretty funny.
The what mentioned above is total fiction. Please don't take it seriously!