Name: Mister Negative
Alter Ego: Martin Li
Other Names: Mr. Negative
First Appearance (Additional Details): (cameo) Free Comic Book Day 2007: The Amazing Spider-Man (June 2007): "Swing Shift"; (full) The Amazing Spider-Man (vol. 1) #546 (Feb. 2008): "Brand New Day"
Super? (Has Super Powers/Special Abilities/Technology): Yes
Number of Appearances: 20
Ally: Aunt May
Worked for: F.E.A.S.T.
Birth Place: China
Note: runs FEAST charity homeless shelters; Aunt May's boss
"F.E.A.S.T." stands for "Food, Emergency Aid, Shelter and Training." FEAST is a legitimate charitable organization run by Mr. Negative in his alter ego, Martin Li. May Parker (Spider-Man's "Aunt May") volunteers at FEAST and is, in fact, one of Mr. Li's top volunteers for the program.
Suggested links for further research about this character and the character's religious affiliation: