Little X-Ray is my newest character and is usually found alongside Lysozyme, or less commonly, Teeka and/or Maus. Not just a companion, he is a font of knowledge, and what he doesn't know about X-rays, CT scans, MRIs, etc isn't worth knowing :) Once you get past his odd, resonant voice, you discover an at times reserved and at times downright pranksterish soul who, once befriended, will stick to you like a leech. He can become invisible, levitate, and produce radiation, but not for more than 10-15 seconds as they require intense concentration. When there's nothing else to do, he plays a small concertina.