|Family|| Irving Walsh (father)|
Irene Walsh (mother)
Brandon Walsh (brother)
|Portrayed by||Sean Astin|
Very little is known about Mikey's life before the events of The Goonies. When Mikey was a little kid, his father used to tell him about One-Eyed Willy. Mikey led The Goonies on a treasure hunt for pirate treasure from the 1600s. On a rainy day, Mikey and his friends went up into the attic of their home and found a map leading to One-Eyed Willy's treasure.
Mikey has Asthma so throughout the movie he is shown with his inhaler.
Mikey also has braces and tells Mouth to stop messing with Chunk
Mikey used his Inhaler eleven times during the movie
Mikey was played by Sean Astin.