The Flash brought back Mark Hamill as the Trickster in the latest episode, and as if that wasn't enough, "Tricksters" also showed that Harrison Wells isn't really Harrison Wells -- as in Eobard Thawne isn't using an alias, he's basically stolen Wells's body. We also saw The Flash reveal his true identity to his father Henry and to Eddie. Following a screening of the episode, executive producer and showrunner Andrew Kreisberg spoke with a group of reporters about those reveals and about whether we'll be seeing the Trickster again.

Mark Hamill in The Flash

Jesse L. Martin and Grant Gustin in The Flash

The father and son Trickster team proved themselves capable of wreaking havoc, and we likely haven't seen the last of them, When asked whether the Trickster will be hanging out with the rest of the Rogues' Gallery in the future, Kreisberg said, "Yes, that is the plan. When I sit down and I think about Wentworth Miller [Captain Cold] and Mark in a scene together and watching the dichotomy of them... I think sometimes there's a tendency to spit out the same villain week in and week out on these shows, and for us, having people who are so different, and having people who have powers, and having people who are slightly unhinged but geniuses [keeps it interesting]. The other reason we really wanted to do the Trickster is because you have so many villains who have these amazing abilities, either because they’re meta-humans or they have this incredible weaponry, and what was always cool about the Trickster on both series is that he was smart. No matter how crazy he was, he was so smart, and he thought like four steps ahead. Watching The Flash and our team go up against somebody brilliant -- a lot of times our shows are about how to figure out how to [stop villains] chemically or scientifically or how The Flash can use his powers to stop somebody, but in this one, they really had to out think him [Trickster]. And Wells had to give Barry something he probably didn’t want to let him know that he could do."Kreisberg also mentioned it's a challenge to find and include adversaries who are worthy of fighting The Flash. "If The Flash can move at super speed, he can't just be fighting bank robbers. Or if he is fighting bank robbers, they have to be able to do something pretty special. And again one of the reasons The Trickster -- both in the comics and the old show, and hopefully people will think on our show -- is so cool is because he doesn’t have any of that. He’s just really, really smart. And he's able to use that smartness to out think the gang."Wells, or Eobard Thawne, is out thinking everyone. Barry is finally suspicious of Wells but has no idea about what we learned. Thawne used future tech to take Wells's body. Kreisberg explained, "It's what we’re calling genetic camouflage, where he basically stole his body. He basically took his body, he rewrote his DNA to match Wells's. But what happened to Harrison Wells's real body and what happened that night -- all of these things are going to start coming out. And I know people were concerned that the events of Episode 15 were erased in 16, but what happened in Episode 15, not all of it went away, as people are going to find out soon."And as far as whether any part of Wells was left after Thawne swiped his body, Kreisberg said, "That's actually something we're just writing the other day. He's had a lot of times when he's talked about Tess and I think that one of the things that kind of bled through was Wells's love for Tess, that Thawne absorbed when he absorbed his body. So that's sort of a fun thing that that's come through." Kreisberg said they wanted Matt Letscher for the role of Thawne and that we haven't seen the last of him.Another Thawne was involved in a surprise in "Tricksters." Eddie learned Barry is The Flash. Barry made the move because he and Joe want Eddie's help to keep Iris in the dark because they think they're protecting her. Kreisberg said that becomes a sticking point for Eddie, "It's interesting. For us, part of the fun of Eddie is he's such a nice guy and he's such a good guy. When you have a love triangle, it's kind of hard for Barry to not like Eddie, even though he's dating Iris because he is a stand-up guy and he clearly cares about her. I think the biggest conflict that's going to come between them is that Barry and Joe, whether it's right or wrong, have made this decision to keep Iris in the dark about things. And Eddie as always is sort of the much more emotionally in touch character, and is like, this is ridiculous, you know, not telling her. You're actually putting her in more danger. And that actually starts to become the conflict between the three men because Eddie is not happy with how Barry and Joe have been handling this."Kreisberg continued, "It starts to really impact his relationship with Iris because Eddie, he says -- it's a great moment where he says to Barry, 'How do you just lie to people like that?' And it makes Barry look at himself and go, 'Wait, when did I become such a great liar? I thought of myself as being so sort of innocent and pure.' And it really starts to grate on Eddie and Iris. And the next episode which is the crossover, Eddie, Iris, Barry, Felicity and Ray all go out for dinner. And it sort of becomes this -- everybody is talking about their feelings, and Eddie and Iris sort of get into a fight. Barry's the fifth wheel. It's fun."

Amy Ratcliffe is a writer for IGN TV. You can follow her on on Twitter at @Amy_Geek and IGN at alratcliffe