This page explains in detail the interactions between the Metroid series and the Warriors (Koei) series.
Dynasty Warriors VS[]
April 26, 2012
Metroid
Warriors (Koei)
This Nintendo 3DS game only released in Japan features Nintendo-themed costumes for user-created characters, being a Link costume for male characters and a Zero Suit Samus costume for female characters.
The Zero Suit is based specifically on its appearance in Metroid: Other M.
License[]
As a mean of cross-promotion, Nintendo authorized the inclusion of the Link and Samus costumes in the game to promote the console.