The Question said:
No, there isn't. Body language is a factor, but hypnosis comes in large part through talking. A hypnotist has to play the right mental cues, make the subject feel comfortable, that sort of stuff. Either way, hypnosis cannot be used in hand to hand combat. Doesn't work.
I personally feel that when really old martial artists are practicing some of their techniques that they don't often pass down and demonstrate great feats of strength and control, a form of control is gained over over their openent.
I've seen a martial artist attempt to try and strike a kung fu ancient master and he physically couldn't do it, the presence of the master (who couldn't use vocal cues since they didn't speak the same language), sent a message through some means to his brain to stop him going through with it (described as the sensation you get when someone is trying to force your hand onto something hot and you are struggling back against it). IN the end he actually had to back well away from the master.
it was described as some sort of chi manipulation but i feel it comes down to intimidation and possible non-vocal suggestions that trigger some hypnotic state. It may not be a deep trance, it may not be for long, but it's for long enough to get what needs to be done finished and sorted.
again, i'm not expecting this to be in the inventory of all martial artists out there but honestly, if someone has practically studied them all to the nth degree, the art of misdirection and intimidation through suggestion of a hypnotic state would definitely be something they would pick up.
i mean to a very very small extent, if i told you something was going to hurt, you'd probably feel more pain occuring than if i didn't say anything at all, the anticipation of new pain can magnify the actual sensation.
now magnify that ten times by being caught by a well feared vigilante where his legends are well known, the vocal cues don't even need to be that direct cause you've heard all the rumours about him and you're also in shock, one blow and you'd be down like a light.
I'd just like to say the original point isn't mine, i'm just formulating a rational example based on what i've seen to see how i feel it could be perceivable in a real life situation if these characters existed.