Question

Can you get a Shiny Kyurem Black/White with only shiny reshiram or zekrom? or do you need Shiny Kyurem?

Comments

https://pokemondb.net/pokebase/227225/will-kyurem-fusions-be-shiny-if-kyurem-is-shiny

There are a fair share of questions like this one.

Answer 1

Kyurem is needed to be shiny in order for the Kyurem fusions to be shiny. Zekrom and/or Reshiram do not need to be shiny.

Source: Experience, and Reshiram and Zekrom are shiny locked in BW2.

Hope I helped!