Vermilion Ace

Also known as Zechariah (or Zek to his closest allies), the Vermilion Ace was a color fixer title that appeared every 15 to 25 years. He was actually a reincarnating energy being, essentially being the first fixer and Hana Association's founder; going even further back and originating from the distant past. He was also Ciel's father after he found her carrying her distorted mother in the middle of the sump, and he raised her with Moses' help.

He died after taking on the Head's arbiters and dying "to the Head" as a setup for Lucisfear's plans.

Appearance
He's an extremely tall (and heavy) middle aged man, usually carrying around a cane(-sword), glasses, and badly adjusted formal clothes. Both his eyes and hair are red.

He also sports a scar on his right eye, delivered to his original incarnation by one of Lucisfear's past lives, having first served under him as a knight, before being betrayed, leading a failed rebellion and promptly getting executed. This is all from a time before dimensional travel was restricted.

Abilities
His main ability is obviously reincarnation, but it is also important to note that he carries along the physical, mental and energy of each previous incarnation to the current.

Vermilion code
Zechariah uses a unique style of swordsmanship and magic named the "Vermilion Code". This style focuses on casting and forming magic circles with a special glass blade that acts as a magic catalyst. The "vermilion" in the name comes from the color of the energy, which is physically drained from the own wizard and any opponent the blade comes into contact with.

Zechariah in particular uses a single one handed sword on his right hand while keeping his left hand free for extra somatic casting.

Ciel was also taught this style, preferring a dual wielding close quarter's style to Zechariah's ranged setups.