What is your favorite battle theme in all the pokemon games?

[Dunsparce]

RGBY/FRLG: Champion
GSC: Crystal Beast Trio Theme
RSE: Emerald Frontier Brain Battle
DPP: Platinum Giratina Theme

Notice how after 1st Gen, my favorite Battle music is exclusive to the third Version in the 2nd, 3rd, and 4th Gen.

Also:
Stadium Series: Mewtwo theme
Colo/XD: Colo's Multiplayer Mode's Rendition of RSE Champion Theme

 

[invisible-chan]

The rival, gym, elite four, and champion music in RGBY and GSC and the Red battle theme from GSC.

 

[Wulf]

The battle against Gary in R/B
The battle against Gargitina.

Very epic, Pokemon always had a good soundtrack.

 

[wobbadude1]

The originals are the best:

the wild/trainer battles in both Pokemon R/B/Y and G/S/C

 

[Opposite Day]

Most certainly this one: https://www.youtube.com/watch?v=EA2raWbXhmw

 

[Detox]

FR/LG- Deoxys battle theme
Emerald-Deoxys battle theme
Emerald-Regis battle theme
D/P/PT-Giratina battle theme

 

[Dunsparce]

D/P/PT-Giratina battle theme

You do know Giratina's theme in Platinum is different for the D/P one, don't you? It's a twisted remix of Dialga/Palkia's Theme.

Besides, the D/P Song can hardly be called "Giratina Battle Theme", as Rotom, Heatran, Regigigas, and New Moon Island Darkrai use it, too.

 

[Luminous]

It would have to be FR/LG trainer battle.

 

[GunSaberSeraph]

G/S/C battle theme
D/P/Pt trainer battle, Battle Frontier Remix

and R/B/Y Champion battle ftw

 

[Master Jecht]

My all time favorite has to be the R/B/Y theme. I had to do that fight so many times it kind of grew on me.