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1.
Halo fanboys are generally people so devoted to Halo that they'll play no other game. If someone dislikes the game then the fanboy will throw a fit.
Most Halo fanboys (not to be steriotypical) are 12-year-olds.
Man TV: "GTA SA just came out on the Xbox and I'm loving it better than Halo!!"
Halo fanboy: "growlingGggrrr, shudup you stupid ijit Halo is 5,000,000 times better than stupid GTA!!!"
Or;
Gamer: "Hey I like Halo and all but Halo 2 was kinda overrated ya know what I'm sayi--"
Halo fanboy: "--Shuddup Halo was not overrated it is the r0xx0r5!!!"
by caffiene4671 August 05, 2005
 
2.
Someone who think halo is the best game ever and that it is far suprear to any game in ever way! also see Xbox fanboy
gamer: "have you played Half Life 2 yet"
Halo Fanboy: "HALO IS 5,000,000 TIMES BETTER THAN HALF LIFE 2!!!! HALO OWNES ALL GAMES!!!!
by Suska March 13, 2005
 
3.
An individual who would make love to master chief if he existed (outside of their hearts) and will defend Halo for as long as the series continues. Pointless to argue or debate with as they will talk over you and feed you B.S
"You know Halo was only popular because it was the first fps on a console right ?"

"NOOOOOOOOOOOO HALO IS DA SHITTT UR JUST BAD AT IT

"shutup fanboy"
"NO YOU SHUTUP I'M NOT A Halo Fanboy
by Supermicklovin October 12, 2012