If Azrael is included in a Dark Angels army then all of the Dark Angels count as being Stubborn, including members of the Ravenwing, as long as he is on the table.
Stubborn resistance against impossible odds is a feature of some races. Stubborn models function as Fearless, except that they still have to test for pinning as normal. This special rule is gained by any independent character joining a Stubborn unit. Characters that are stubborn confer the ability onto any unit that they lead, as long as the character is part of the unit.
Infantry, Character
5
4
10
3+
