Useless characters:
1. Fiona - I put her in my party after she became available, moved her 3 squares, pressed "end", got killed in 1 hit. Never to return again.
2. Meg - Want to perform attack with her, see enemy has 2x 30, hold her steady where she can't be attacked, and next round it's the same.
3. Heather - Attack, damage = 3 enemy health = 27 *hmmm, this is not gonna work*, hey they group with Ike's team - everyone's amazing - bye Heather.
4. Ulki and Janaff: "Ha cool I have birds" - arrow - *start over without birds*
5. Lethe: "Ha, she was one of my favorites in PoR, let's take her" - Hmmm, she's not very strong - Hmmmmm she doesn't gain a lot EXP - Hmmmmmmmmmm she's only Laguz form for like 3 attacks - Hmmmmmmmmmm untranformed everyone can double attack attack her.
6. BK: "Ha I can fight with BK" - "uhm, Sir Knight, was it really necessary to kill every single living thing on the battlefield without a scratch or a single EXP???"
7. Tanith + girlfriend: See birds + at that time in the game the last thing you need is a gay Pegasus knight when you have Haar destroying an entire army by itself.
EDIT: Janaff and Ulki are actually quite good. The problem is that they are very strong, don't gain much exp and still at level 30something get killed with A SINGLE arrowshot! I know: Don't put your bird in range of an archer, but it's more the principle that someone with over 50 health can be destroyed that easily.