Originally Posted by andy82
Not an entry that I filled but:
At 3:05 in this longplay he does not appear in the game credits:
[ Show youtube player ]
He appears in the hi-score table. He is also in the manual but only credited for "System Utilities" (3rd PDF "page"):
It is very likely that he is behind the "Vivid Image" that is credited for Game Design (both in-game and also in the manual).
However, there is nothing official in those that states that he should be among the "main credits", hence why he is not credited in the entry.