The Bill & Ted cartoon series aired in 1990 / 91. I know that Alex lent his voice to the loveable cartoon of Bill in the first season while the production was still in the hands of Hanna-Barbera. Unfortunately things changed in the second season with the take-over of the series by Fox.

For more info on the animated series I'd like to refer you to the official Bill and Ted site. Linda has put a lot of time and effort in explaining it all very thoroughly for you. There's no way I could do that any better.

Please visit: www.billandted.org and check under Cartoons.