What’s that one annoying unit for you?

The one annoying unit?....

The most annoying unit is brave Lyn because she's disgusting with reinhardt and I always see them together in arena.

Recently, L! Lucina with her time travel shenanigans has really annoyed me and cost me a couple of arena runs. Not only that but she has some really unexpected fire power due to her weapon. Makes me regret not pulling for her.

Literally any dancer, although the flying dancers are particularely annoying becasue I can't seem to figure out how the AI uses them -_-

Ironically, for me it's Legendary Lucina. For some reason, it's hard for me to predict the AI's movement with Future Vision. Sometimes she doesn't use it at all, and other times Lucy uses it to traverse across the entire map to snipe my Micaiah.
I once faced against a team with Reinhardt, Brave Lyn, Legendary Lucina, and YT!Olivia on my last match in Arena. My Micaiah barely made it out of there alive ._.

My Nowi and Felicia have been having a surprising amount of trouble vs raven+TA Cecilia. Reinhardt is difficult to deal with (B.Lyn not so much because my Nowi is fast), but my Nowi can take him.

When I finish merging Nowi, bold fighter Effie is probably going to be my bane, depending on the build. I might be able to just attack into her with Nowi for a win sometimes, but if I can't I might be in for a hard time. Hardin at least can't ignis, and Gwendolyn probably clangs metal without her special so I could probably just tank it and heal up with aether. Zelgius and W.Tharja I can attack into, and if I have to take a black luna, Nowi is blue so he loses some atk. Effie hits too hard and I'm not confident about surviving an ignis. Bold fighter H.Jakob might also cause issues.

Anytime I play blade tome S.Catria the last thing I want to run into is dull ranged, which usually means M.Morgan.

I don't actually struggle with that many units or consider them annoying, I can counter most units with my Myrrh and rest of them with any blue unit. The only unit that has really destroyed my arena streaks is BK/Zelgius with vantage (usually my fault for not looking at their builds too much). If my blue unit misses the kill, the next unit to attack the guy will be blasted away with that Black Luna xd

Any dancer with Wings of Mercy.

For specific units, LLucina with her Future Vision has foiled my attempts at clearing the arena with no deaths. That support skill also makes her hard to predict sometimes, and this is coming from someone who can anticipate/predict dancer/dancee movements.

Red mage Eirika. She's basically a red B!Lyn that targets res. Huge threat range and crazy offensive power. Lately I've been running a +res reinhardt with Red Tomebreaker and that works ok but short of running specialized skills, she is incredibly hard to bait, and it's also hard to get the first strike.

ANY UNIT THAT «bonus unit» CAN'T OHKO/ORKO

right now L!Lucina, future vision sucks my bonus unit is Alfonse so any blue unit specially with ta looking at you Nowi...

before I had problems with *magic is everything* and *the enemy* but because they have low bst I don't see them anymore I used to kill them with Robinne

It use to be those +10 zelgius with BL bold fighter and qr3,but now there not a problem,I let ayra or a competent blue do away with him 👍.

Any unit with random breaker skill, that kills your unit when you're not careful enough(basically the story of TT)

Lyn is my archenemy. She two shots my Tharja even though my Tharja has like 37 base def.
As for Fallen Celica, I let my dragons do the work (Adult Tiki).

If you also mean pulling, here’s a story...
When I first picked up this game, I got all my free units: Legendary Ike, CYL Roy, and i even managed to pull a Lyn from the CYL banner that is given to you. Later I pulled a Mist, and at this point I fidn’t really care about A skills/B skills/etc so I just learned whatever and left it be. I didn’t exactly know how anything worked. So of course when I ran into any blue without my Lyn I was dead. Then one day in Arena I was doing my normal thing not knowing what I was doing when I encountered this monster player with some strong units I could barely beat, even losing my Mist (not like it wasn’t predictable. And when I finally beat the three, there was this monster sitting at the back. I hit it once with like Ike or Roy and was pretty confident. Even though I had 2 red units, Ike and Roy, neither of then could kill it after and no matter who I sent at it they died. I ended up LOSING that 3-1 albeit I was low health on all. After that I’ve been basically only summoning blues and greensjust to find that monster (and maybe Brave Ike). I haven’t pulled *a single one* yet. Even on the recent banner with him as a focus I got a damned +Res -Def Julia (which I closed my eyes for and thought it was him) and on the one that came right after (the current banner) a Kana with some terrible IVs I forgot.
Another was Legendary Lucina. My very last summon in the final hours before it was going to disappear I closed my eyes and hear FIVE stars. I excitedly open them and am greeted with a Azura... I was so mad lol, would’ve taken an Ishtar for +1 or for Swift Sparrow/Odd Atk Wave.
TL;DR this game likes to fuck with me especially with Robin

I can give three answers:

-the obvious choice. B!Lyn and Reinhardt just suck in arena. You have to bait them out a change your whole strategy, hoping certain units can tank the hit and hoping there are no dancers paired with them is just a pain and makes me want to restart my arena runs every time I see them.

-more personally, WoM armors. These come out of nowhere because most times I don’t look at the skills my opponents have if they are an armored team or have an armor on their team. Growing used to the bold/vengeful fight or Vantage armors I’m always caught off guard when the enemy Hector flies across the map to destroy my units.

-Most hated unit to see. Karla/Ayra. The amount of times I’ve been wrathed or regal astrad thinking “I’ll survive” only to be quaffed because of even speed wave. Or some random position Buff I wasn’t aware of kicks in. I don’t have many good offensive blue units, and most are defensive and slow, almost requiring guard to do anything to them.