Jolean Wejbe has been playing Tancy (teenie) since Big Love premiered. She plays the youngest daughter Bill had with Barbara. The only redhead in this extended family. Jolean has also appeared in a Gilmore Girl's episode before she started on Big Love.IMDB
Keegan Holst has been portraying Wayne since Big Love premiered, The older child Nicki shares with Bill. He is often seen causeing trouble with his younger brother Raymond. Keegan has done 1 movie and 1 other show besides Big love.IMDB
Mitchell Grey is the fraternal brother to Spencer and Garrett. He has been seen in a few episodes of Big Love along side his brothers. He is the back up child for Keegan. Mitchell is use to working as a back up child, as an infant he was back up for his brothers on Day's Of Our Lives, and appeared as an extra in a christmas episode.IMDB
Spencer And Garrett Grey have been playing Raymond since Big love Premiered. The boys were not new to working on a tv show. They have been working on TV since they were toddlers. When they filmed the pilot they were still working as Zack on Day's Of Our Lives. They portray the younger son of Nicki and Bill.Spencer's IMDB
Garret's IMDB
Hayden and Christian Nelson hav been playing Aaron since Big Love premiered. The Oldest child of Margene and Bill. The twin's are still in the role of Aaron.
These unknown set of twins have been playing Lester since the second episode. The soon to be middle child of Margene and Bill. Nothing was ever released on the babies
Ethan and Gavin Gallardo-Kent have taken over the role of lester. The boys also filmed the Season Premiere of The shield which aired in April. They were 6 months old at the time. And were 9 Months when they took over the role of Lester. Congrats Boys, Hope to see you two in more shows.
Aidan & Andrew Gonzales are now Main babies playing Joey Jr. only son to Wanda & Joey Henrickson. The role was previously played by Cooper & Camden Smith for the birth scene but was quickly replaced by a Doll. Aidan & Andrew are not new to tv. The boys have already been in 3 movie's including The comebacks, knocked up, and The Brothers Solomon. And 4 other tv show's including Las Vegas, Crossing Jordan, My name is Earl and They're the main babies over on ER as baby Joe.Aidan's IMDB
Andrew's IMDB

Changling
The Oaks
The Unit
Four Christmases
The Kings of Appletown
Marley & me
11:11
Big Love
NowhereLand
Land of the Lost
Astro Boy
A Christmas Carol
Labor Pains
Love at First Hiccup
FootSteps
Jack and the Beanstalk
Magic
Opposite Day
Malevolence: Bereavemeny
Sweet Flame
The Trouble with Cali
Twixter
Out Numbered
Southern Baptist Sissies
S Darko
Winged Creatures
Mississippi Damned
Home Movie
Pheobe in Wonderland
Burning Palms