Allies are one of the most important aspects of the game; without allies, your villain will be weak and easily defeated in battle.
To add an ally you must go to the Alliance tab in-game, type in a players 5-digit code, and click on "Add Villain". I strongly suggest that at a low level (even level one), you add all of your allies and maybe a few extras, just in case a few of your alliance members happen to remove you from their list or delete their villain.
You can find alliance codes in various areas; the most common being the forum in-game. There is a list of alliance codes available in the Ally Codes page on this website.
A few quick facts about villains that you should know:- In order to bring a henchman and vehicle into battle, you must have an alliance member to activate them. - At level 1, you may bring a maximum of 11 alliance members to battle. - Every time you level up once, you may bring an addition alliance member to battle (until level 40). - You may bring a maximum of 50 alliance members to a battle at level 40. - You may bring a maximum of 10 hired guns to a battle at level 40. - With 50 alliance members and 10 hired guns, you may bring 60 Henchmen and 60 vehicles to battle.