Hiii. I'm Jori and I play Roger Davies. He is exactly like how the books describe: a flirtatious Quidditch player. Of course there is more to him than all that, but the other details are boring.
Roger is really close with George (and formerly Fred). They were all good mates at Hogwarts and he's spent some time at the Burrow, though not to the extent that Harry and Hermione did. So, Ginny would know him, and of course he'll have teased her like the twins but is nice enough.