Trivia

He developed an iPad app called "Racing Blind" together with his father and brother. It is the only game available on the app store that is meant to be played with the eyes closed.

He grew two inches while shooting Ender's Game (2013).

His dream role would be to play James Bond.

Has worked twice with Ben Kingsley in the movies Hugo (2011) and Ender's Game (2013).

He was one of the final candidates for the third film incarnation of Peter Parker/Spider-Man, though Tom Holland was cast instead. On May 14, 2015, film journalist Umberto Gonzalez reported that Asa had already been chosen for the role, a story carried by most film news sites. In both the 2010 and 2015 casting cycles for Spider-Man, no actor reported by film websites as being all-but-confirmed for the role has ever ended up actually cast as Spider-Man. The other actors erroneously reported to have been cast are Logan Lerman (in April 2010), Jamie Bell (in early June 2010), Josh Hutcherson (on June 30, 2010, one day before the official casting of Andrew Garfield), and Dylan O'Brien (in March 2015).

He has an older brother called Morgan. Asa also has a younger maternal half-sister, Loxie, and a younger paternal half-sister, Marlie.

In Hebrew, "Asa" means "healer" or "physician", also spelled "Ase". The name "Asa" appears in the Old Testament to designate the third King of Judah.

In his GCSEs he got 1 A*, 3 A's and 6 B's.

He is a supporter of the Arsenal Football Club.

On his father's side, he is the grandson of Jeanne Elizabeth (Hewett) and Roy Butterfield, who is an Emeritus Professor in Engineering and the Environment.

He's a fan of professional gamer and caster "Destiny".

Son of Jacqueline Farr and Sam Butterfield.

As a young man, he has already played three characters whose younger versions were portrayed by younger actors: Aiden Flowers and Nicholas Oteri as Jake in "Miss Peregrine's Home for Peculiar Children"; Henry Kelemen as Jude in "10,000 Saints"; and Edward Baker-Close as Nathan in "A Brilliant Young Mind".

"Asa" in Arabic means (the name of Jesus ).

His name Asa means Wing in Portuguese.