The pig with the helmet is called Corporal Pig, not Soldier Pig. "soldier pigs" could be used to refer to any of the pigs that serve under Corporal Pig in Angry Birds Toons, but in terms of the main pig with a helmet: his name is Corporal Pig.
Why don't you include The Blues can Splitting up and You don't Count New Characters such as Silver, Leonard and Melody also you don't include Mighty Eagle