Lightning Dust is a female Pegasus pony who appears in the episode Wonderbolts Academy and in the IDW comics' Friendship is Magic Issue #8. She shares her eye color and sometimes her cutie mark with Sassaflash, whose coat color is very similar to hers.
Lightning Dust's cutie mark consists of a lightning bolt and three stars. She is shown to leave a blue and yellow thunderbolt streak behind her when she flies, similar to Rainbow Dash's rainbow streak and The Wonderbolts' trail of lightning clouds.