Recently I've been playing lately and on different paths/save files I use different characters, paired with different supports, to see who is an all around great or decent unit to have. Now in all fairness at least all of the units in Fire Emblem all all great in their own respect, (except for Marcus, we don't talk about Marcus) but some of them not so much. In what I have discovered so far these units, excluding Lords, are what a lot of people say are great units that can be used in almost any playthrough:
- Sain
Florina
Serra
Lucius
Rebecca
Raven
Dart
Nino
Now in terms of supports I'm more or less biased to canon pairings, or close to, so I mostly pair them like so:
- Eliwood x Ninian
Hector x Lyn/Florina
Lowen x Rebecca
Bartre x Karla (Hector Mode Only)
Oswin x Serra
Priscillia x Erk/Heath
Kent x Fiora
Sain x Fiora/Rebecca/Priscilla
Raven x Lucius
Dart x Farina (Hector Mode Only)
Rath x Lyn
Nino x Jaffar