Yep, this is terrible. Agreed.
Unlike most, I can say I enjoyed 1999's 'Inspector Gadget'. I didn't like this though. I wasn't necessarily expecting it to be better per se, but I did hear that it's supposedly more faithful to the original television show so I thought there was a possibility it would be, at least, just as good - it isn't.
Everything about 'Inspector Gadget 2' is severely inferior. The cast aren't as noteworthy, there aren't any - even mildly - amusing scenes and the whole vibe of the film is cheap. It even runs for longer, mostly due to it forcing through a hearty narrative with the characters - wholesomeness simply doesn't fit in a production that needs to be 100% silly.
None of the original cast return, with the exception of D. L. Hughley (Gadgetmobile) - though he is barely in this sequel. Elaine Hendrix ('The Parent Trap') is a decent name/face, her character G2 is possibly the most interesting thing onscreen.
1.5 average rating on Letterboxd, entirely deserved - unlike it's predecessor's score.