I've heard around a lot that Nieko Hayer is favored in the part for Seth Clearwater. He's very much the perfect person for it. Boo Boo Stewart is a strong choice for the role. He has over 20 videos supporting him on youtube. One of which is him talking about playing the role, which has got almost 4000 veiws. The first video ever supporting Boo Boo playing Seth, posted by the person who came up with the idea has got almost 7000 veiws. Pretty much all of the videos supporting boo boo have more than 150 veiws. Some in the 700's. All together Boo Boo has possibley 15000+ veiws on all these videos on youtube. Boo Boo auditioned in person in LA, and said it went really great. He was also working out preiviously to auditioning. He also knows Taylor Lautner as they both trained at the same Martial Arts Club, XMA. Video links below are some of the fan videos off youtube:
Harry Clearwater is the father of Seth Clearwater, he died of a heart attack in New Moon.
Leah Clearwater, Seth Clearwater, Embry Call, and Quil Ateara.
His name is Booboo Stewart and portrays the character Seth Clearwater in New Moon and Eclipse.
As far as we know (the fans) Seth Clearwater does not have a girlfriend
Leah Clearwater is going to be played by Julia Jones in Eclipse. Her on-screen brother, Seth Clearwater, is going to be played by BooBoo Stewart.
Tyler Posey is rumored to be playing Seth in New Moon
17. But he plays Seth Clearwater who is 15.
The parts of Leah and Seth Clearwater have not yet been cast so maybe, but no one knows yet.
Boo Boo Stewart. He was in the musical group T-Squad
Seth and Leah Clearwater
Seth Clearwater will be played by Boo Boo Stewart in New Moon and Eclipse.
There will be no Seth in Newmoon It's been rumored that Nieko Hayer will be Seth Clearwater in Eclipse though. the above answer is wrong seth clearwater will be in the new moon movie but no as a defined character he will be in one scene where belle goes to have dinner with Jacob and bill and the clearwater family will be there as well but it is rumored that nieko hayer might get the role of seth clearwater