Kolbert, informally known as Kolb, or Kolbert21337 is the leader of the Lost Legion. He first showed up with the Legion at Villagetown in book 3 of Wimpy Villager. At first, Kolb and the Legion abused and bullied the Villagers, thinking they were still 'NPC's' with no minds of their own.
Later on, Kolb realized the truth in fact that the world around was in fact real. He now works to convince the clan members who think otherwise, and is now a big help to the Village. Aside from that, the Villagers (and readers), know almost nothing about him, other than that he seems to be a threat in Herobrine's eyes, a threat so important that his best commanders run rampant on Ardenvell. Kolb has in his possession the legendary blade Critbringer, or Aeon.