Favorite Nino Counters?

Normal sanaki blows her up.

Red mage and green tomebreakers

Anything that can trigger Panic Ploy is good.

EDIT: unless she's running an owl tome?

I don't struggle with Nino but I usually bait her with a supermerged QR3 vantage DC Hawkeye, a pretty high investment.

As someone who plays a lot of Nino, my Nino counter is usually...Nino. But to be serious, in my experience, if they can bait her before she has desperation active, DC armors like Zelgius/BK and Hector will give her a baaaad time.

Brave bow

I use Ike, Xander and L! Lyn to take care of her in AA.
Ike can take one hit then kill her in one hit.
Xander with G. tome breaker can handle her.
And L! Lyn can bait her in enemy phase and then finish her in player phase.

You could consider QR on Felicia. Then she only needs to block the double. If Felicia doesn't have +atk or Plate+eff then make sure you buff her atk, because fully merged Nino can, under some conditions, take two hits and survive (but not if you activate glacies)

Kaze with the same idea will also work

Red DC units with high enough atk will OHKO Nino.

Julius, 'nuff said.