I've played Cantr for several years and sadly haven't had any *really* influential or great characters. It's mainly because I was either a full-time student or working, and I tend toward sleepy/simming chars. Since it's been so long and I've no records anymore (I used to keep char notes on my old laptop), it's hard to remember most of my early chars, who were much more active. Here are some that I *do* remember:
Dead Ones:
-Lilith-Teresa. She was the mayor of Katan after her partner Ravyn died. Katan was much busier then. She did a lot of machine and house building, and there's a monument bearing her name, but I don't think she was a very memorable character otherwise.
-Duck Fish. She was a very successful pirate for a while...then she got caught....and then escaped...then got caught...then escaped. Died of a heart attack in one of two unsubs.
-Winnie Heart. She died quite young at the same time as Duck. She's the one who collected and organized all the notes in the Scarab Haunt Library. She ran off to Midgar where she was generally quiet and depressed before dying.
-Ruby MacGregor (of the clan) was my first character. She lived about 7 RL years ago, so I remember little save for the fact that she became fairly influential for a time, though she never voiced anything herself. She was more of an 'advisor' to her husband.
-Another early character, Jayne Milliway, was the headmistress of the Goldmine Bordello after Gabriella died. Business got slow for many years and she ended up leaving. Also a very long time ago, so I don't really remember where she went after that.
-My first attempt at a shit-disturber character was Starlys Black. It hardly counts as an accomplishment, but she broke up a few relationships with her man-stealing. She also tended to piss people off - she build a huge monument in the centre of town to a friend of hers (Spazzheart) who wasn't even from the town and died there after less than a year. Didn't really enjoy playing her, unfortunately.
*I know there were more, but again, memory fails me.
My new characters, who will go un-named because it's more fun that way:
-One's managed to build a raker and a longboat, as well as a full set of tools and a crossbow/kite shield all by herself. She's from a desolate island and stumbled across the machines in abandoned places, but the rest was all her. Some wood was salvaged, but the rest was gathered and manufactured on her own.
-Another made a LOT of bronze, and assuming she finishes her current boat project, is off to trade it. I had her do this in part because I wish there was more bronze in the game

It's pretty.
-One's found an awesome abandoned town, complete with a *really cool* building. Radio in it and all...and she's attached all-new locks for her own use. The odd traveler comes through, so I hope to found a town with her.
-Lastly, one of my very newest character has scavenged some awesome stuff. Weapons, tools, healing liquids, and a jeep. Nice. (Not really an achievement, more like taking advantage.)