Mean look is not in the form of a TM, it is only a move, for now. Below is a link to a web-page showing all the Pokémon in Soul Silver and Heart Gold that can learn the move, along with the Pokémon that learns it through breeding.
See below in the "Related Links" section for the link. The section you want is almost past the middle of the web-page.
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According to Serebii, there is no tm for it. A list of pokemon that can learn it is attached (see related links).
It cannot be found. It must be learned by a Pokemon at a certain level like Golbat or Haunter.No where actually you just have to find a golbat somewhere & it should already have learnedmean look.Hope this helps you.
You can use certain moves that trap the Pokemon so that they can not Escape. (Mean look is one of them) You can also put the Pokemon to sleep or use a Master Ball on them.
Mean Look is not a TM in any of the Pokemon games. It is a move that can be learned by Pokemon such as Golbat, and Crobat.
If you mean how to consider yourself as beaten the kanto region in pokemon soulsilver, then you should find zapdos,moltres, and articuno. You should also beat Red (Ash Ketchum). Once you do that, you can catch Mewtwo.