Zack is a fictional character portrayed by John Stamos in the TV series Friends.
In the first episode they appeared in, titled The One with the Donor (season 9), they were 39 years old.
They appear in 1 episodes out of a total of 234 aired
Episodes1
The One with the Donor
episode S9.E22 may 2003Rachel take Joey's girlfriend Charlie and Phoebe shopping. Ross presents his theory to get a chance to go a conference in Barbados. Monica and Chandler consider alternate pregnancy options.