What Pokemon can not be legitimately caught shiny?

Question

like zekrom reshiram

Answer 1

Okay, bulbapedia specifically names Victini, Zekrom, and Reshiram as not being able to be shiny. However, it says that wild Zekrom, Reshiram, and Victini can't be shiny, which means that they might be shiny when obtained through instant gain events.

Comments

The only two event Victini's were never shiny.