created by Kevin Diller and Justin Lowe created by Kevin Diller & Justin Lowe created by Neville Astley and Mark Baker created by Neville Astley and Mark Baker. created by Helen Nicoll and Jan Pienkowski. created by Neville Astley and Mark Baker]. created by Steven Hillenburg. created by Joan Holub and Suzanne Williams created by Geoff Blackwell and Ruth Hobday created by Jerry Siegel and Joe Shusterc