Throw a pokeball at it.
You must trade from Pokemon White, which instead of Tornadus, it will be Thunderus. :)
trade. no other way.
In Pokemon black you catch RESHIRAM and TORNADUS In Pokemon white you catch ZEKROM and THUNDERUS Sources : myself
You can't get Thunderus in Pokemon Platinum at all. By then when Pokemon Platinum was made, no one knew that Pokemon Black and White were going to be made.
First catch Thunderus then Tornadus then go to Abundant Shrine.
You catch Thundurus, but must trade Tornadus from Pokemon Black.
if you talk to the shrine with tornadus and thunderus then landorus attacks you and you can catch it in battle.
If you mean using other peoples' thunderus and tornadus then yes but if you mean not having either one at all, then nope.
You catch them with a ultra ball
Yes you can catch Reshiram in Pokemon black and you can catch zekrom in Pokemon white hope it helped.
You can't catch entei in Pokemon black he is on a different version
No.