LEGO Halo as a theme doesn't exist. However, many people custom Lego to create Halo helmets, figures etc. Try typing it into eBay to see what it comes up with.
MegaBlox makes Halo sets. LEGO does not.
megablocks.com
There is no Lego Halo. However, try Mocpages (see related link below), which have plenty of fanbuilds. You can also buy Lego halo stuff on a website called brickforge.
none it reeks
Not Lego halo but there are halo megablocks sets.
No. There is no Lego Halo. It the game was a Hoax, and there are no sets for it. There are fans building Lego Halo, but not the Official Lego group.
No, Lego Halo does not exist.
Lego Halo does not exist.
There are Halo Mega blocks. They are similar to Lego.
No. There is no Lego Halo, only Megablocks Halo Universe sets.
No. There is no Lego Halo, only Megablocks Halo Universe sets.
Microsoft has given up on the Idea and there will be no LEGO Halo or Halo DS.