Sorry for the late post... Exams... :-(
Here is another and the answers of the other questions will be posted really soon.. :-)
X is a well-known Hollywood stunt man, con-man etc. He is well known for his amusing stunts which unfortunately do not succeed in being funny without being stupid. X is reportedly said to speak Parsletongue and have powers to form a ball of energy with his hand. X is completely imaginary. He is popular because he is said to have co-founded Y.
Simple enough... ID X
Answer : X is JIMBO Wales.. uncyclopaedian version of Jimmy.. Y - WIKIPEDIA... Cracked only by Arpit and raghav..