27 years
hes been in the wwe for 12 yearz he started in 1992
17 years
20 Years
he was an in ring performer from 2001-2009 in wwe
54 years
he has been in the wwe since 2000 till now
WWE is World Wrestling Entertainment, (Smackdown! and Raw) which has been around for 50 years or so. TNA is a newish wrestling company where many wrestlers kicked out of WWE go to. TNA tries to compete with WWE (they're rivals) but WWE has more experience and therefore has better business then TNA.
2 whole years answer from juan olivera
Rey Mysterio joined WWE in 2002, so he has been in WWE for 8 years.
I don't know where you got that idea, but WWE is not going anywhere they have been in business since 1952 and still going strong!
10 years
do get into the wwe you need to have 5 years of training and experience. if you need to know more it has more information on www.wwe.com