ROMAAAAAAAAAAAAAAAAAAAN!
Against Ganon, if you land a shffl nair, do a rising uair IMMEDIATELY. It's like... guaranteed.
I like doing
nair>rising SH nair>DJ FF dair
But that's cuz I'm not a crazy pika main with 3000 hit combos.
I stopped watching the vid cuz I'm hungry. If you're srsly about getting your Pika good, tho, I'll start giving advice on him when we play.
Oh, and Tim loooooooves trying to shield grab, cuz of Barwl. So what you should do vs him when you get him to shield is
xup nair (land behind him), then either rising uair (keep your back to him, so it hits immediately, leads to combos if he tries to shieldgrab), grab him!!!!, ooooor, wait outside his shield while facing him. If you see him jump, usmash (or duck, if you think he's gonna bair OoS, THEN usmash/utilt, depending on %). If he rolls, chase him with SHFFLing. Pika's shffl goes like... the perfect distance for hunting Ganon's rolls down.
Oh, and if he sidesteps, do whatever. I do dsmash cuz it's easy, buuuuut they can CC it maybeidunno?