Mono

is a member of the Seven Catastrophes appearing in The Seven Deadly Sins: Grand Cross. She holds the title of Mono of Blood and Iron, representing her devotion for killing and spread chaos.

Personality
Similar to Gowther before recovering his memories, Mono hardly demonstrate emotions and her actions are purely based how it will contribute for her training.

However, Mono has developed more social skills over her time with the Catastrophes, having even befriended a tribe of Wererbear that resided on the forest near Porto City, for much of the group's surprise.

Appearance
Mono is a tall woman with light skin, short light violet hair, blue eyes, curvaceous figure and wears two hoop earrings.

After upgrading her weapon arsenal under Valenty's assistance, Mono's hair growns longer and is now tied in a ponytail with side bangs.

History
Mono is an artifical human created exclusively for combat and murderous purposes, having her entire life being resumed on training, fighting and killing. Her creators appearently made her to live at the behest of others, as the own Mono mentioned after being summoned by Eastin that she lives to 'follow orders'.

She is summoned to Britannia by Eastin and Valenti when the two Catastrophes attempted to summon something capable of cutting through space and time in order to rescue Lillia, who was imprisoned by Merlin after falling into a trap at the Black Magic Hall. Although initially hostile, Mono agreed to help after Valenty encourage her to come with them while finding herself a new reason to live as her own person rather than simply following orders.

On the way to Lillia's rescue, while Valenti stayed behind distracting Merlin, Mono and Eastin broke through the Temporal Rift, but are suddenly ambushed by Ban and Gowther. However, with the combined efforts of the now free Lilia and Eastin, the group manages to defeat the two Sins and escape once again.

Abilities and Equipment
Mono is a skilled swordsman and carries two short swords along with two telepathically controlled katanas. Her swords seems to be steeped with a deadly poison. Mono also affirms that doesn't have biological needs such as sleeping and eating.

Werebear Tribe Chieftan
Mono met him on patrol once and seems to have become friends with the beast, occasionally killing things for him. While looking for lumber to use in the construction of their new base, she, Lilia, and Shin dispatched of some Shadow Walkers who were invading upon the area for the Chieftan, in return he brought some spare lumber to the group's construction site.

Zaratras
Mono and Zaratras, due to unknown reasons, clearly have some bad blood between them and doesn't get along.

Trivia

 * Mono's title refers to the policy of blood and iron of Bismarck. This policy meant being cruel to the enemies, use of swords, harshness, and strictness, and shedding blood
 * Mono might be based seventh and fourth disaster of the Benevolent King Sutra's and Lotus Sutra definitions, "war" and "attacks by swords and staves", respectively, since she was created by battle proposes on her original world.
 * Mono seems rather confidant in her ability to make friends.