The battle for the Gold Symbol against Noland
0A video from August 2018. This was the last symbol I obtained, and since I already had the national pokedex completed (except for Mew, Celebi, Hirachi and Deoxys) and all the contest paintings in the Museum, I finally got the golden Trainer Card.
Of all the Frontier Brains, the only battles I couldn't record on camera were the two battles against Lucy and the first against Brandon (I didn't have a cellphone nor a digital camera back then, so I used my laptop's webcam to record every battle video from the Frontier Pass, and as you know, both Battle Pyke and Pyramid don't let you save a video).
One year later, on August 2019, I hatched my "Quite Impressive" Slaking (named King Kong) and I started learning about RNG mechanics, in order to get a competitive Latios trough Pomeg Glitch and a Metagross from Steven's house pokeball (named Metallian, later improved by breeding). From that moment, I pushed my own limits on the Battle Frontier facilities, on a never ending journey of memorable battles, catching all the wild shinies available on my +11 year-old Emerald savefile thanks to the Pokefinder, and finally breeding perfect IVs pokemon.