Talk:Mizari (Web Novel)/@comment-36209226-20190218201654/@comment-10330822-20190622031351

Hard to say, because Rimuru is supposed force the evolution through Food Chain which allows him to get skills from subordinates or feed abilities to subordinates.

Still, with them being Guy's subordinates and not Rimuru's, chances are the corridors were just used to evolve them, but not develop their powers, because that's a perk of being Rimuru's subordinate.