Almost every species has an advantage and a weakness, described as follows.
Juggernauts Strength: 90% more health than average. Weakness: Ground speed, jump height, acceleration, and aerial dodging below 10-20%.
Mercs Strength: 30% more health. Weakness: None. Note: Malcolm, Brock, and Lauren are Mercs.
Nightmares Strength: Walking speed 50% higher, crouching movement speed 20% higher. Weakness: Ground speed has a 10% penalty.
Gen Mo'Kai Strength: 30% faster on ground and 20% more maneuverable in air; accelerate 10% faster and have 10% higher aerial dodging speed. Weakness: maximum health is 20% lower and weapons do 10% less damage than normal.
Automatons Strength: 10% more health and 60% higher dodging ability. Weakness: 20% penalty for walking speed, 30% to crouching movement, and 30% to aerial dodging speed.
Egyptians Strength: High maneuverability (150% better control in air, 30% higher jump, and 50% higher aerial dodging ability). Weakness: !5% less maximum health, 10% less inflicted damage penalty, a 20% acceleration penalty, and 10% dodging penalty on ground.