2. Lucina the Future Witness
Speaking of darling royalty with a penchant for serial murder, Lucina is the time travelling heroine from Fire Emblem: Awakening who longs to avenge her butchered parents. She’s got one of the highest attack stats in the game, ridiculous speed for someone who’s such a one-shotting wonder, and a super valuable bonus against dragons, which comes in very handy in several of Heroes’ more challenging story missions. Also, her signature weapon, the Parallel Falchion, heals her up every third turn, making her ridiculously hard to kill assuming you survive long enough to try.
Also, her birthday is April 20th. For a certain demographic, this is a huge plus. You know who you are.