Very doubtful it's a bot considering they took a separate DC, don't have any DoH/DoL leveled and are not part of a botting ring Retainer FC. It would also make no sense to go to the trouble of making a clone for an RMT spammer, since those inevitably get banned and are temporary characters, hence the nonsense or character generator names.

The most likely situation is that someone liked how your character looked and made a test alt for potential fantasia purposes.