Hopefully this isn't too many at once #yolo
Ohai. Replaces Beran (boss of Turning Traitor). R-button text: "Desu~". Battle quote: "Konnichiwa~". Death quote: "Ara ara~ Oniichan, daame~!". Give him -4 strength, but +4 speed and a brave bow. Change his AI so he pursues without heed instead of guarding.
Ganon. Replaces Duessel. He is a druid with A ranks in both dark and anima, and has growths of 20% in all stats. R-button text: "The prince of darkness. Possesses the greatest face in Koridai." Death quote: "NO! You haven't seen the last of me!!!" He starts with a Thunder tome and a Flux tome.
Florina. Replaces Syrene. Valkyrie. Her description, bases, growths, etc are all the same as in FE7 (but adjust her bases to be appropriate for the time when she joins). She starts with an Aura tome and a Rescue staff.
Lyn. Replaces Carlyle. Female swordmaster. Still has a wind sword.
Also, make Steel weapons give +10 luck when equipped.
edit: how do i shot web +do spoiler tags