Sophia is Ned Thunderzap's mother. She only appeared in Classic Ned.
Sophia never made an appearance on any of Ned's videos, but Ned sometimes describes her has morbidly obese and disgusting. Sophia used to be in good shape and very pretty when she met David's father, but after Mac was born, she was so obsessed with picking on Ned, she didn't care how she looked.
In the beginning, of what Ned could remember, Sophia was very nice. But then after Mac was born, she started to follow her son instead of being in charge and raising him. After that, she was no longer the same person. She was mean. Her and Mac made fun of Ned since he was a baby and then until he was 16.