What are all the Legendaries used by Trainers in Black and White 2?

Question

E.g. Lati@s used by Benga in White Treehollow/Black Tower.

Answer 1

The following Trainers are guaranteed to use at least one Legendary Pokemon.

PKMN Trainer N (Zekrom in Black 2, Reshiram in White 2)

Black Tower
Boss Trainer Harmony (Tornadus)
Boss Trainer Ira (Articuno, Entei)
Boss Trainer Benga (Latios)
Boss Trainer Janna (Suicune, Heatran, Latios)

White Treehollow
Boss Trainer Harmon (Thundurus)
Boss Trainer Iria (Moltres, Raikou)
Boss Trainer Benga (Latias)
Boss Trainer Jariel (Zapdos, Cresselia, Latias)

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The following Trainers are pulled from a pool of all possible Trainers in the Battle Subway and Battle Institute. They can only appear as opponents in the Battle Subway's Super Course or in the Battle Institute's later battles.

These Trainers are guaranteed to use at least one Legendary Pokemon from their pools:
Socialite Aparna, Socialite Saty, Gentleman Camus, Gentleman Kavan
Articuno, Zapdos, Moltres, Raikou, Entei, Suicune, Regirock, Regice, Registeel, Latias, Latios, Heatran, Cresselia, Regigigas, Cobalion, Terrakion, Virizion, Tornadus, Thundurus, Landorus

These Trainers are not guaranteed to use a Legendary Pokemon:
Pilot Artemas, Pilot Chand
Articuno, Zapdos, Moltres, Tornadus, Thundurus

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N (Bulbapedia)
Black Tower (Bulbapedia)
White Treehollow (Bulbapedia)
List of Battle Subway Trainers (Bulbapedia)
List of Battle Subway Pokemon (Bulbapedia)

Answer 2

Ermygerd I might be wrong but these are the ones I think can be seen;
Legendary Birds
Legendary Golems
Eon Duo
Lake Guardians
Cresselia
Heatran
Shaymin
Zekrom
Reshiram
Kyurem
I'm not sure but Sea Guardian Duo/Legendary Beasts/Regigigas might be able to be seen ingame. Not sure about these.
Anyway. You can see like Latios, Latias with Benga... and ones like Cresselia/Hetran... BATTLE TOWER OF COURSE. >:D. And subway. can't forget that. :3

Answer 3

well, I thing it's zekrom, reshiram and kyurem are used in games. I don't really know for the games but, for the movie..... I know almost everything. do you know when latias is used on movie. latias is used by Nurse Joy in Pokemon DP: Nurse Joy Vs Forrest here's the link if you want to watch the video: http://www.youtube.com/watch?v=trTy_EffPeY