It's an mediocre OVA if you had no expectations and an open mind. The storyline itself is actually pretty decent, but the English voice actors don't add to the quality. This OVA also contains THE most annoying Sonic world character I have ever encountered in my life. Sara. She's selfish, arrogant, and loud, among other things. The ending theme of "Look-A-Likes" by Riu Konaka was pretty good. The words make no sense early on though, and it's only when you really think about it do SOME parts make sense. Knuckles fans who liked the dedication he has in other universes will cry. There's no sign of a Master Emerald anywhere, and the closest thing to hinting of it is in the fact that he likes to treasure hunt. There are a few questionable scenes in the OVA, but they're all really subtle. I didn't even notice most of them, so they're mostly only obvious if you're looking for them. The story is an overused one, though it's probably the best part out of the OVA. Sonic and Tails are tricked into going down to Robotropolis to deactivate a bomb, and meet Knuckles on the way down. From the DVD description, you can probably tell how Metal Sonic is involved in all of this. There's some fighting, but no blood, and lots of yelling. There are some useless characters that had little roles in the movie's context, but it didn't get to the point where it was overly ridiculous. Overall, the OVA was rather disappointing, but a mediocre film for those who had few expectations anyway.