Luke is the holy weasel of Sylver's band of outlaws. Near the beginning of Thunder Oak, Luke prays that Sylver's band will have good fortune and that bad fortune will rain down upon their enemies, Prince Poynt and Lord Flaggatis. Luke has a friendly rivalry with Wodehead, the wizard of Sylver's band. Wodehead and Luke are the two elders of the band, and they both have unique skills.
Luke the weasel appears in the entire Welkin Weasels Sylver arc, which includes Thunder Oak, Castle Storm and Windjammer Run.
Luke is a holy weasel who thinks that the sadistic Prince Poynt and the crazy, vicious Lord Flaggatis are evil and bad. He is a good, fair weasel.