Complex sentence: While going to school he worked at Disneyland in the character department and portrayed Dopey, Practical Pig, Prince John, Pluto and many other characters during the three years he worked there.
Split into simpler sentences: While going to school he worked at Disneyland in the character department. He portrayed Dopey, Practical Pig, Prince John, Pluto and many other characters during the three years he worked there.