Mr. A is the name given to a character featured in hand in killer7. He is a scientist who reveals during an interview with Jack Foley that he is involved in the creation of new varieties of Heaven Smiles. His testimony confirms what the game hints at several times: most Heaven Smiles are directly created by Kun Lan's God Hand itself, but after Mr. A and two other scientists discovered how to artificially alter the characteristics of the light emanating from the hand they began to develop new types of Smiles.

Mr. A reveals that he and his colleagues originally sided with Kun Lan because they sympathized with his ideals, calling him a 'leader of our times'; however, he repaid their assistance by slowly transforming them into Heaven Smiles themselves. The scientist explains to Foley that his two colleagues have already fully become Smiles, but mere seconds later begins to laugh uncontrollably and transforms into a Smile himself. Terrified, Foley runs away and leaves Mr. A to his gruesome fate.

killer7 characters
The killer7 Harman Smith · Garcian Smith · Dan Smith · KAEDE Smith · Kevin Smith · Coyote Smith · Con Smith · MASK de Smith
The Smith Syndicate Samantha Sitbon · Christopher Mills · Iwazaru · Kikazaru · Mizaru · Travis Bell · Kess BloodySunday · Yoon-Hyun · Susie Sumner · Mad Doctor · Gary Wanderers
Heaven Smile Kun Lan · Heaven Smile · Gatekeeper · Kenjiro Matsuoka
Angel Angel · Red Gunners · Bianca · Pussy
Sunset Toru Fukushima · Young Guys ×3 · Jean DePaul · Julia Kisugi · Spencer · Hiroyasu Kurahashi · Shinya Akiba · Hiro Kasai · Mary · Plenty
Cloudman Andrei Ulmeyda · Stacy Spangles · Cult Member · Old Man · Man in Photograph · Drug Store Employee · Postman · Security Guard · Gabriel Clemence · General Lynch · Helga
Encounter Curtis Blackburn · Curtis's Bitch · AYAME Blackburn · Pedro Montana · Mary Montana · Archangel · Xenia
Alter Ego The Handsome Men · Steve Thunderson · Trevor Pearlharbor · Singer · Mithra · LOVE Wilcox
Smile Linda Vermillion · Edo Macalister · Dimitri Nightmare · Holbert · Emir Parkreiner · Benjamin Keane · Greg Nightmare · Solitaire
Lion Last Shot Smile
And... Johnny Gagnon
Hand in killer7 Jaco Checkbox · Jim Townsend · Susan · Graham MacAlister · Jack Foley · Mr. A
killer is dead Shigeki Birkin · Samayoru · Mario Castiglioni
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