Guard (5.16)

This guard is an episodic character on Once Upon a Time. In the wrong place at the wrong time, this once loyal employee of the Wicked Witch of the West's winds up as collateral damage when a green fireball aimed for Dorothy Gale kills him by mistake. After dying, his soul travels to the Underworld where he is forced to stay until completing his unfinished business.

Before the Curse
When the Wicked Witch of the West took over Oz, this guard became apart of her work staff. One day, Dorothy Gale learns that Zelena is alive and well, and is now wreaking havoc in the realm she once traveled to. Immediately she returns with her silver slippers to put a stop to the Wicked Witch. During their first battle with one another since Dorothy's return, a green fireball is sent the farmgirl's way, but she ducts to miss it. Happening to be in the wrong place at the wrong time, this guard is hit by the fireball and his head is immediately turned into a puff of smoke. It's later mentioned by Hades that upon dying, the guard's soul traveled to the Underworld where he will remain until fulfilling his unfinished business from the land of the living.