—Hermit explaining the Harrier class.
Harrier is a class that first appears in Fire Emblem Echoes: Shadows of Valentia. It is an overclass and functions as the promotion for the Falcon Knight class. Upon promotion they learn the spell: Fire.
As a pegasus class that can use magic, it bears a strong resemblance to the Dark Flier class featured in previous games.
|Base Class||Promotion Method||Promoted Class|
|FE15||Falcon Knight||Visit the Altar of the Skylord when the relevant unit reaches Level 20.||Harrier|
"Harrier" is a name given to some species of diurnal hawks.
"Mach" is the ratio of an object's mass to the speed of sound surrounding it, like Mach 1, Mach 2, et cetera. The word "mach" is also named in honor of Ernest Mach, a famous Austrian physicist who studied aerodynamics. This could be related to how the Mach is a flying class.