Fan Casting Selachi in Skylanders: Across All Creation DLC - A Radiant Rendezvous

A dirt shark apprenticed under the Mystic Seekers who channels Brown Radiance, which alters Radiance Channelers' powers by giving them the ability to channel the Earth Element in addition to their usual Element. Selachi is a bit simple-minded, but she's reliable and never one to give up on someone. She's one of the potential Apprentice Seekers you first unlock on your save file, or if you don't have her initially, you can travel both you and your friends' versions of the Radiant Isles to find and recruit her.