The Commando starts with an automatic rifle and a one-handed melee weapon.
They gain a huge bonus to critical hit chance (the equivalent of several level-ups and luck stat increases), which is great for fast-hitting melee and ranged weapons and the Saboteur's unique perks make you much more agile and able to dodge attacks, which really helps make you feel like an untouchable badass in battles. The best class in Biomutant is the Saboteur.