Rob Kazinsky has joined Guillermo del Toro’s alien-invasion epic “Pacific Rim,” and Willem Dafoe is in early talks for the Legendary Pictures project.Dafoe is being eyed as a rogue scientist with expertise on alien creatures, while Kazinsky would portray a member of the team trying to defeat the invaders. Charlie Hunnan, Idris Elba, Charlie Day and Max Martini are already cast. Production is expected to get under way this fall. Legendary had no comment. Travis Beacham’s script is set in 2025, the 12th year of a war against alien creatures who reside in the middle of the Pacific Ocean. Dafoe, soon to be seen in “John Carter” and “Odd Thomas,” is repped by WME and D/F Management. Kazinsky, a regular on “Law & Order: Los Angeles” and “Brothers and Sisters,” is repped by Brillstein Entertainment Partners.