In Age of Wonders: Shadow Magic, while a neutral faction, regular humans and nomads are the main enemies of the expansion.
The flavour text on War Galley and Fire Thrower units states that they started out as benign Dwarven inventions before humans refitted them for war.However the angelic Highmen (lead by Gabriel) claim that humans are just the first True Neutral invoked race who can choose good or evil. Most Undead leaders and Doom Priests are ex-humans. Well, humans are very expansionist, ambitious, and refuse to let anything like, say, the elven empire stand in their way.Subverted in AoW III by many class units built by humans having special abilities, such as enhanced spirit damage for Theocrats or powerful cavalry charges for Warlords. Straight in that most races have special characteristics, but human units set the baseline for unit statistics, with no innate bonuses or weaknesses. Humans Are Average: Both played straight and subverted.Hunter of Monsters: Human Knights in Age of Wonders II and III deal more damage to dragons, while the latter also are effective against monster units.Upon reaching Elite rank, their attacks can inflict Daze, preventing the enemy from attacking.