Dragon Chan
Dragon Chan's special move is a flying kick. He will hop up on the turnbuckle, jump over to the other turnbuckle, jump to the floor, then finally deliver the kick. You want to duck just before he starts to deliver the kick. Throw him a jab on whatever side he's on -- a right jab if he's on the right, left if he's on the left -- then pound him with left jabs. You might get in a hook but he might dodge it.
At the start of the match he will tend to leave his face open a lot, which is good for building up your KO meter. Wait for him drop his guard, then just pound on his face.
For quick knock out, dodge any punches he throws in the initial seconds of the bout. If you can knock him down before he makes contact with you, he will stay down for a ten count.
Vodka Drunkenski
Like many Punch-Out!! opponents, Vodka Drunkenski can be very tough if you don't know the trick, and very easy if you do. This big guy doesn't have any real special moves, he's just strong and aggressive. That aggression is going to be his downfall. Keep your guard up, covering your face, as he will usually lead with a jab. His two main attacks in the beginning are a jab and a hook, and two jabs and a hook. Do not lead into him, he will counter it. It's not necessary to, anyway, because he will throw plenty of punches of his own. Block the jabs, dodge the hooks, and jab back. If his hook places him to your right, hit him with a right, and if it places him to your left, hit him with a left. (If you hit him with a right when he's on your left, it will connect but you won't get to follow through with more jabs. Be careful!) Then continue with left jabs. Eventually he will start using uppercuts -- you can tell when he enters this phase when he throws a jab but doesn't follow it up -- and those are easy to dodge and counter, too.
If you knock him down, his first move when he gets back up will always be an uppercut. Dodge and counter as usual. That is all you need to know to bring down Vodka Drunkenski.
Great Tiger
If you've played against the blue-gloves Piston Hurricane in Punch-Out!!, you've played against this guy. He is almost exactly the same, just maybe a little easier.
It's best to have your KO meter full when he starts going into his Hurricane Rush. The reason is that after he starts dancing and starts to run at you, if you throw an uppercut or hook at just the moment he starts coming for you, it will connect at the right time. Otherwise, the timing is tricky. Watch closely and you can get it. If you miss, he will run down the clock severely.
If you knock him down while he goes into the Hurricane Rush, be warned that he will throw a few uppercuts when he gets up. This is the way he ends the Rush as well.