BIONICLE #20: Struggle in the Sky is the twentieth issue of the BIONICLE comic series.
The inside front cover provides brief backstory. The centerfold features a battle scene including the Toa Metru, Vahki, and Dark Hunters based on photographs of the sets. A back page includes an interview with some of the creative minds behind the upcoming movie BIONICLE 2: Legends of Metru Nui, namely Christian Faber (art director for the Advance Agency), Duane Loose (art director for the movie), and David Molina (director of the movie). Another back page features the Toa Lhikan and Kikanalo set (coming to Toys R Us and www.legoshop.com), including a description of both characters. Another back page promotes new content on bionicle.com. The back cover advertises the movie BIONICLE 2: Legends of Metru Nui, coming to DVD and video on October 19.