Actor Ryan Reynolds is known for having a quirky sense of humor, and he showcases it in a new video promoting his upcoming film "Pokémon: Detective Pikachu."

Reynolds posted the video Monday, a day ahead of the official trailer's release. It is a mini mockumentary called "Becoming Pikachu" that reveals the lengths Reynolds supposedly went to for his voice and motion capture role. He describes how he "spent the entire year as Detective Pikachu," even when it meant leaving his two young daughters and wife behind.

"I immersed myself completely within the world of Pokemon," Reynolds says. "I read about him; I live at his height; I tried to lose 182 pounds to match his weight until doctors intervened."

The video also includes a cameo from Reynolds's wife, actress Blake Lively, who makes it clear that she's less than enthused about her husband's approach to acting. Watch below.

"Pokémon: Detective Pikachu" is directed by Rob Letterman. The film hits theaters May 10.