Making his presence known in Emmerdale ahead of Dan and Kerry's wedding, it soon becomes clear the brothers don't always get on as Dan is jealous of his ex-army sibling.
But despite his character's seemingly easy manner and dramatic stories, Mark revealed to This Morning that not all is what it seems.
He said: "I love Daz, I just think he is not what you think he is.
"There is a particular reason which we definitely find out this week why Daz has utilised the fact there is a wedding to his best advantage.
"As all good classic soap weddings are I can probably be allowed to say it doesn't go very smoothly and whether or not Daz has a hand in that (you will have to wait and see)."
After being a big hit with the villagers, especially the ladies, questions were raised as to whether or not there was a potential love interest for the character.
Mark revealed: "There's definitely going to be a moment (with) one of the characters ...we get close and I would imagine that everyone at home would be very disappointed.
"And I would imagine it would be one of those moments where there is literally a "no!" (moment) going on. So I'm so pleased because this has been just tremendous for me."
With previous soap experience on Coronation Street, EastEnders and Hollyoaks, Mark said he really feels like he has "landed on his feet" in getting this latest role and he hopes the show's producers will let him stay for a while yet.
"This whole being in Emmerdale is great, just to have a nice chunk of story should be good enough, but I think what they have done, the writing is so brilliant on this, they lead you down a little path.
"This week we'll know why he is really there and then maybe in your own mind as an audience member you will think: "Oh, OK, we know what type of person he is now and we'll watch for that".
"But it goes off again, there's a little thing that happens and it takes him somewhere else, but because of the Spencer connection, it affects them and it affects their storylines and part of my journey is to send others off on journeys too directly because of me and it's just brilliant how that unfolds."