Serena

This unnamed Guard is one of the assistants of the Magic Council, and one of the two guards assigned to watch over Jellal Fernandes.

Appearance
He is a relatively short, frog like creature that wears a dark blue robe with red trimmings.

Personality
He appears to be kind as he asked his colleague, Nadal, to stop torturing Jellal.

S-Class Trial arc
He and his colleague were guarding Jellal Fernandes' cell, and they heard him mumbling something, and the unnamed guard called Jellal Seigrein and asked him what he was mumbling. Nadal quickly corrected him and told him that Jellal wasn't Seigrein, and that he was responsible for shattering everyone's trust. As Jellal continues to mumble, he wonders if he is saying some kind of Magic Incantation, but Nadal tells him that he is in a prison built with Magic Sealing Stone and that there was no way he could use Magic in there. Nadal then asks his colleague if he wants to test out the prison, and Nadal zaps Jellal with his Magic Staff, and the unnamed guard asks him to stop. After Nadal finishes torturing Jellal. He along with Nadal are both bewildered when Jellal says "Erza don't lose".

Magic and Abilities
Magic Staff: He wields a wooden staff which is coiled at the tip, and bears the Rune Knights' symbol on it. Despite not having been shown to do so, the weapon is presumably capable of firing a Magic beam from its tip, much like the one carried by the Guard's companion Nadal.