Roy moves ranked.(top 3, will do another three tomorrow)NOT IN A VAC(Based on my competitive exp. with explanations)
Jab, I actually do not use this move that much in neutral and if I do, its as a mixup after hitting a shield with something else safe, being frame 5 (his fastest move with up air also being frame 5) This move is best used in ledge trap situations, reading spotdodges, and on characters with mid oos options. It combos into almost every move in his kit. The sourspot has a use as a near un-reactable tech chase, which lets you get a free pivet cancel f tilt or dash attack for the kill.
Down tilt, I use this move even more than jab, its -3 on shield(as safe as cloud bair), does a hefty 13%, lets you mash on any character's shield with 0 risk of being shield grabbed, unlike jab. Sets up for tech chases starting at 50 where you can get a kill by reacting to their getup with jab. If this move set up for tech chases at 45% even, it would be better than jab, to people who don't play roy they wont get it, but roy players, I KNOW that you know.
3.Nair, Scares your opponent into not jumping in neutral unless they have a better anti air. Because of this you can pressure easily with your amazing grounded kit and eventually condition a jump. If your opponent does end up taking the move at 0, they are looking easily at 50+ damage. you can also get this combo from d throw. nair 1 is useful-ish. Not much of a reason to use at low percents because while they do combo, they will barely benefit you damage wise. At high percents nair 1 will confirm into uptilt for the kill at around 115. This move can also be used as a frame 9 whiff punish for big damage on opponents who don't low profile, to compare, nair starts at frame 6 and jump squat is 3 frames, making it frame 9 just like mythra dash attack for a punish. good for ledgetrapping combined with jab because it covers jump getup even better than jab does + it autoreads regular getup and will sometimes hit roll, it also beats out most attacks from drop ledge and will high profile most getup attacks.