Wally West has arrived on The Flash! In Season 2's midseason finale, "Running to Stand Still," Keiynan Lonsdale's character arrived on Iris (Candice Patton) and Joe West's (Jesse L. Martin) doorstep to connect with the family he never knew.

Candice Patton, Jesse L. Martin and Keiynan Lonsdale in The Flash

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As fans of DC Comics know, Wally West has a larger role to play than just being a new family member. After the episode aired, I hopped on the phone with Lonsdale to talk about how long it will take to get to know Wally more, find out whether he can offer any Kid Flash teases and learn what we have to look forward to when The Flash returns from its winter hiatus.I think the most important thing we can take away is that he made the choice to go to that house and introduce himself. It was such a short reveal, but at the end of the day that's a huge thing. So now it's like, "Where do we go from here?" Because I think even what Joe and Iris were saying is that they've accepted a new family member, and they'll take the time to meet him. So that kind of came as a shock that he obviously walked up so quickly. But yeah, it's kind of "How do we deal with this now?"I don't think you'll have to wait too long, yeah -- as soon as this break is over. Because this break is long enough; I don't think the producers are too cruel.At this point, I have no idea in terms of me becoming Kid Flash and all that stuff. I think that's going to be a slow burn, because what they really have to focus on is developing a family and him building up a relationship with each of those characters -- Barry included, because he is almost a brother now to him, if that's how he wants to see it. In terms of when he becomes Kid Flash, I have no idea. That's not information that I know, but I'm hoping that it comes soon. [laughs] And when the day comes, I just hope that Barry and Wally are running side by side. I think it'd be really awesome to be the sidekick. I think that'd be cool. [laughs]The majority of what you're going to see Wally do is that interaction with family. So you're going to get a lot of family moments, and it's going to have a lot of emotional depth to it. So I think fans can really look forward to that. I guess for them as well, like you said, the focus hasn't been as much on family as it was in the first season, but with a new son that'll definitely be the case now. It will be interesting to see how everyone deals with that. Obviously having to deal with the new Zoom situation, which is frightening and terrifying.I knew about the TV show, The Flash. I didn't know too much about Wally West. So as soon as they told me that I was auditioning for "Wally West, aka Kid Flash," I was like, "OK!" I kind of understood where they were going with it with that little title. [laughs] So I did my research, and I got some comic books. The fans told me to watch Young Justice, and I watched that, and I got a little more familiar with Wally West. And I'm still doing that now. DC just sent me a bunch of old-school Wally West comics, so I guess I'm still researching. But yeah, I wasn't too familiar with it all prior, aside from the show.I think he's layered, like every human is. But a lot of the things that people discuss when they talk about Wally and his great qualities are his bright energy and his humor. I think what will be interesting with the show is the fact that he's still that guy, but he's going through some really crappy things at the moment, with his family, with his mum being sick and having to have these new people forced into his life. It's a big deal, and he's not in a good place. So it'll be interesting seeing him try to figure out who he is in all of that. For me, I think, at the end of the day, Wally West is a million different things, just like other people, but he's also a good guy. He's loyal. And, how we're going to portray him, he's also at this point quite protective of himself. So it will be interesting to see how much of his personality he lets people in on right away.I mean, he's not necessarily hitting it off with anyone right away, but he will have a good relationship with Joe. That's what we hope. But I think he really does click with Joe, whether he admits that or not -- and with Iris as well. They definitely feel like brother and sister going forward. It'll be fun to watch.Well, we didn't do anything in particular to get that bond; it just kind of came naturally. Luckily, Candice was the first person I met from the cast, because I did my last week of shooting with her. So when I walked on the set I guess I was already feeling a little bit familiar with her, so that was helpful. Everyone's really awesome as well. They've been so welcoming. But it's been cool. We've been hanging out a lot off set. I think she even tweeted the other day that she already feels like my big sister. [laughs] So it's been really cool. She's awesome.You can look forward to seeing Wally being Wally outside of his family.It means Wally getting himself into some dangerous situations. You'll probably see Wally not making the best choices, but he'll be enjoying himself, definitely. [laughs]

Terri Schwartz is Entertainment Editor at IGN. Follow her on Twitter at @Terri_Schwartz