Mother

is a character in D.Gray-man: Reverse. She is an old woman who lives in the church in a small part of town. She latered appeared during the Seed of Destruction Arc.

Appearance
She is a small old lady who carries cigarette to smoke.

Personality
She has a harsh personality but deep down she cares for people's well being. She doesn't tolerate cheating as she hits Allen when he cheats.

History
Apparently Allen Walker once indebted to her, it was revealed that she sheltered Cross and Allen after Mana's death.

The Person Who Sells Souls Arc (Anime-only)
Allen and Lenalee arrive at Liverpool to meet her, who took care of Allen during his training years with General Cross, to ask her about his master's whereabouts.

Seed of Destruction Arc
She was seen wondering and reminising about her time with Allen and Cross, and especially wondered if Allen had been consumed by the 14th yet. She was shocked when an exhausted Allen Walker, who was running from Apocryphos and the Order, appeared at her church.