You know what’s odd? Back to the Future had a cartoon and I know almost nothing about it. I think this is odd because I knew about every movie tie in cartoon from the 80s to early 90s, or at least I thought I did. Hell, I ate Bill and Ted Cereal which was based more on the cartoon than the films. Despite my lack of knowledge though, it existed. Back to the Future only lived as a cartoon for only two seasons going from 1991 to 1993.
The series took place after Back to the Future III and it featured Marty, Doc, his two kids, and Einstein the dog. I could go on relating more details of the series, but you don’t need to know much more. It was marketed to little kids and it wasn’t very good. The most notable thing about it is that it featured Christopher Lloyd. Not as the voice of Doc in the cartoon though, but in the live action segments. Oh yeah, and Bill Nye was there to teach kids about science before he got his own show.
Why did the cartoon not last very long? Probably because it’s not very good, but another guess would be that it aired in 1991. That’s six years after the first movie aired and one year after the third film came out. Was the target demo of little kids still into Back to the Future by then? If it had been geared for a bit older kids, I think I would have really dug it.
Regardless, it exists and I’m sure you can find it on some sort of bootleg dealer at a comic book convention.