Coward

A coward is a person who, through fear or excessive self-concern, lack courage and override doing or saying what is right or good. It is usually seen in times of extreme stress when the person fails to meet a challenge that they could potentially meet.

There is a belief that cowards have a certain amount of luck and able to escape dangerous situations. This is likely due to a coward avoiding danger rather than being able to escape it.

History
Sabretooth accused Wolverine of having a coward's luck after he was saved by Inuit people in Canada.

Felicia Hardy believed Peter Parker was a coward after he fled during the Black Widow attack. In actuality he was changing into Spider-Man to save them.

Flash Thompson was a coward during the same attack and again when he was captured at OsCorp Industries. He admitted this to Spider-Man after he was saved.