Conversation so far:
What happened to Rey Mysterio in the 1996–1998 Cruiserweight division?
Rey Mysterio made his World Championship Wrestling (WCW) debut on June 16, 1996, at The Great American Bash.
Was Rey Mysterio champion wrestler during the 1996–1998 Cruiserweight division?
On July 8, Rey Mysterio defeated Malenko to win his first Cruiserweight Championship.
were there any other titles won by Rey Mysterio, besides the 1996 Cruiserweight Championship?
Rey Mysterio defeated Guerrero in a Title vs. Mask match at Halloween Havoc to win the Cruiserweight Championship for the second time.
During the 1990s was Rey Mysterio on tv for the Cruiserweight division?
In early 1997, Rey Mysterio feuded with Prince Iaukea over the WCW World Television Championship.
Was Rey Mysterio successful in the Cruiserweight division?
On the January 15, 1998 episode of WCW Thunder, Rey Mysterio defeated Juventud to win his third Cruiserweight Championship, but lost it nine days later.
Were there many matches for Rey Mysterio during the 1990s?
Rey Mysterio had a series of matches with ECW-newcomer Juventud Guerrera during the first half of 1996.
What were some other matches if any that Rey Mysterio did in the 1990s?
Rey Mysterio challenged Ultimate Dragon for the J-Crown Championship, but was unsuccessful in his title match at World War 3.
Did Rey Mysterio receive any belts for his wins?
Rey Mysterio defeated Jericho for his fourth Cruiserweight championship. The next night, however, the result was overturned and the belt returned.

Question: Did he lose any matches?
Self-contained rewrite: Did Rey Mysterio lose any matches?