Tough. -The Halo CE version could not be boarded and was able to fire its plasma mortar at a player right up to the edge of its frontal armor. It could only be safely engaged with heavy weapons, or at range. -The Halo 2 version was fairly maneuverable. It could actually be fired at really long ranges, which is best seen in the level Metropolis, specifically the bridge. Its armor is invulnerable to Spartan punches. -The Halo 3 version is inferior to the Halo Reach version. The Halo Reach version had a more powerful cannon, and I'm pretty sure it could take more damage. -The Halo 4 version is unable to fire at range, and I don't like the color of the plasma mortar bolt. I'm not counting the AA wraith as it ruins the poll.