Incidentally, Melody is also my favourite character. Since game release I had decided I would pick a 3 star and stick with them for ever, that 3 star was Melody. I loved her design, and being the clumsy maid with extremely good fighting skills seemed funny to me. Then I found out that she was actually one of the best 3 stars in the game, and that she could keep up with 5 star DPS because of her party-wide str buff. I just kept liking her more and more as time went on.
I love Xander because of his design, though his personality puts me off a bit, I still like him and he was the unit I wanted the most since day 1 of the game. When Vida came out, I liked her design, and her skill set was interesting. Botan became and instant favorite as well, her personality and design just fit so well and she was the first free event unit that was actually good (though mainly because bleed is OP). Vanessa was more like she grew on me, because I wanted a fire unit that wasn’t Euden or a healer for HMS and I didn’t like Mikoto’s design (though he grew on me later on) so I decided to build Vanessa and I began to love playing as her, I used to think axes were clunky and terrible, but she changed my perspective. Bows are my least favourite weapon tbh, but Nefaria is the only one I actually use sometimes and she was the first shadow 5* I had. Maribelle, along with Xander was one of the units I wanted the most from the start of the game. Ricardt is my favourite because I didn’t have any other healers when I started the game, and he simply grew on me, and it turns out he’s pretty good too.
Sorry for talking so much, I would mention my runner ups, but I’m done now. Getting back to DL since New Years got me excited to talk about it again.