His brother was the one actually auditioning for the role of Short Round in Indiana Jones and the Temple of Doom (1984). Jonathan just followed his brother along, but the casting people decided to pick him instead.
Attended Alhambra High School in Alhambra, California, USA.
In the scene in The Goonies (1985), where rocks are falling from the cave ceiling, he screams "Holy S-H-I-T", spelling the expletive rather than saying it. He did this because his mother made him promise not to use any bad language in the movie.
He is now a martial artist and working as a stunt coordinator, recently worked with Jet Li on "The One" 
Graduated from the University of Southern California School of Cinema Television.
Personal Quotes (1)
[on entertainment lawyer Jeff Cohen, his co-star from The Goonies and legal representative] We'll be friends for life. He's my Goonies brother. In fact, my [Everything Everywhere All at Once] producer told me a really funny story the other day. He said never in his life did he think that he would have to talk to Chunk to get Data to be in his movie. I thought that was hilarious.