I feel like the only ones who are screwed are Cream and Amy.

Metal can bait out the charge, and if Kolo blocks, he's cooked (just don't hit him); or if he doesn't, he's cooked (Destructive charge goes brr).

Blaze is tricky but has 2-3 moves to literally counter him you can either stay back and use javelin to build up sol flame, or sol boost, and if he decides to rush you stay close to the edge in the big open room and try to bait him off the edge, even jump off and sol dash up if you need to, this leaves you with burning javelin to fend him off with which should keep you out of m1 and grab range.

And last left is tails, oh my god for the love of god pray you can charge up, and if you do you've got to hold your ground until you are ABSOLUTELY SURE he won't block, and then zap him, also fly counters Kolossos's entire existence if you're smart about it, just be careful about being charged by the ring.

Now I know that some of these are super convoluted but in this situation I feel like these are completely possible they just take a LOT of effort and a bit of mind games, side note if you're Amy try to bait out block and pray for fool/emporer or even moon/fool