Major Bio-mechanoid
Redmech 1


  • 100 (base damage)
  • 0-50 (base blast radius)
Point value



endothermus cyborg


genetically programmed


30 ft

For the Major Biomechanoid in other games, see Major Bio-mechanoid.

The Major Bio-mechanoid is an enemy in Serious Sam: The First Encounter, Serious Sam: The Second Encounter and Serious Sam HD.


Bio-mechanoid Majors are bipedal cyborgs with robotic chicken legs and a large red body that has two rocket launchers attached to its sides. They have been designed by Mental from the ground-up from avian DNA, allowing him to customize them to his needs. They run on a battery that can be recharged by hooking it up to an external power source.

A Major Bio-mechanoid does not fire its rockets simultaneously, which can help it target a particularly mobile target. For example, if the player is strafing right and a rocket misses, then starts strafing left, the second missile will fire at the player even though they are going in the opposite direction. After firing two missiles, the Major will have a brief cool-down period, then start firing again.

Majors are one of the deadliest enemies in the game; they have high health points and their rockets can inflict a lot of damage, especially if they explode in close proximity to the player.


  • A charged up SBC Cannon shot can kill a Major Bio-mechanoid in one hit. This is very useful if the player needs to pick off Majors quickly. Because charged up cannonballs can quickly travel across an area, this makes the Cannon useful against Majors at any range. However, this depletes Cannon ammunition rather quickly, and it is best to use the Cannon against other enemies as well, such as large Lava Golems, Fiendian Reptilian Demons and large masses of Kleers and Beheaded Kamikazes.
  • When not having a Cannon, rockets and grenades are good options to take them out. The XL2 Lasergun and XM-212-A Minigun work well too, but it quickly depletes ammunition.
  • A Major Bio-mechanoid is a very deadly enemy if left unchecked. Its rockets can inflict major damage, even with splash damage. It should be one of the first enemies targeted in a group of enemies, even if there are fast enemies like Kleer Skeletons following the player.
  • A Major's rockets can be shot down with any weapon. Therefore, in situations when a Bio-mechanoid spawns very close, it is recommended to switch to rapid-fire weapon and aim at its weapons.
  • Majors have a different way of firing rockets in Serious Sam HD. Normally, they fired firstly from the left and then from the right. In HD, they fire first from the right, then from the left. This is useful to know when attempting to fire down its rockets.
  • Jumping when Major Bio-mechanoids fire makes them fire rockets further away, thus reducing the chance of getting hit by splash damage of rockets hitting the ground.
  • Avoid standing near or in front of walls. Remember that a Major Bio-mechanoid's rockets will explode on impact and the splash damage can hit you from behind or the side.
  • Major Bio-mechanoids should be considered a medium-priority target when paired with other enemies. Its attacks may be powerful but they are relatively easy to dodge, at least in open areas.

Behind the scenesEdit

  • An early model for the Major Bio-mechanoid can be seen in Test 1. It is lower-poly, has a completely different skin and a rougher death animation. Also all earlier builds of Serious Sam had the same model as the one from Test 1.
  • Pre-Test 1 images and Serious Sam Origins show that the alpha Major was blue.




Serious Sam HD Edit

See alsoEdit

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