What are your favorite battle themes in Pokémon? (Both battle themes and legendary Pokémon themes) Some of mine are: Vs Cyrus, Vs Cynthia, Vs Ghetsis (BW), Vs Gladion, Vs Guzma, E4 Hoenn (RSE), Unova, and Alola, Vs Giratina, Vs Reshiram/Zekrom, Vs Xerneas/Yveltal, Vs Solgaleo/Lunala (SM), Vs Primal Groudon/Kyogre, and Vs Deoxys. And also Vs Archie/Maxie (ORAS) and Vs Zinnia (whoops I forgot those 2)
Gladion's theme is among my favorites. Generation 7 has its own flaws (*cough* replayability), but the music was spot on. I love the Ultra Necrozma theme as well. Wally's theme in ORAS is simple, but very good; Zinnia's theme also holds its own.
Dialga and Palkia’s theme - A nice, long, climatic song. All of the Team Skull themes - They’re so full of personality. Coloress’ theme - Many think this theme is forgettable. However, I disagree! Unova Elite Four theme - I mostly like this one for nostalgia reasons. Due to being so bad at the game, I had to hear this song over and over. Cyrus’ theme - The intensity and build up in this song is incredible. If only the USUM version was the original length.
My favorite legendary Pokémon theme would have to be Ultra Necrozma. At first I wasn't too into it and I don't know what made me like it, but over time I did. Coloress' theme also was absolutely amazing and is still one of my favorite battle themes. There really hasn't been any music like Coloress' theme in the Pokémon series.
I'm not really the type to pay much attention to the music but My favorite Legendary Themes are Vs. Giratina and Vs. Guardian Deities (Tapus). Both themes are just so unique to me and I love them just because of that. For Trainer Themes my favorite themes has got to be the Team Skull themes, theyre just so fun to listen too.
Non-Canon Songs Below As Well Vs. Lance in the Gen 2 Remakes was perhaps one of my favorite battle musics, as well as Hau's battle theme. As well as them, I liked Dialga's Fight to the Finish (only non-canon). My favorite legendary themes would have to be from Lugia (for good reasons) and Giratina.
Fighting plasma grunts in BW Rainbow rocket, namely the beginning Dialga/Palkia in DP I like the Tapus too