Ryu's at first glance looks like another parry, but it's actually a neutral poke like Karin and Ibuki's with a Kolin counter on start up. All three of those v-skills are useful, so giving Ryu the best of both might be what the boy needs.
Ken's is his CvS2 wheel kick. You can combo into and out of it, it goes over fireballs and lows, and it can be charged to be plus on block. If it's an overhead too (and it looks like it might be), it might be OD because it's pretty fast.