Here you can find a list of the Mechanicus Towers available for the Tower Defense event, Theater Mechanicus in Genshin Impact.

Theater Mechanicus 2.0 Guides
Stage 1			Stage 2			Stage 3			Stage 4			Stage 5
Stage 6			Stage 7			Stage 8			Stage 9			Stage 10
Theater Mechanicus Gameplay Guides
Mechanicus Mastery					Mechanicus Towers					Wondrous Sticks

How to Upgrade Mechanicus

Use Wondrous Sticks

The only way to upgrade your Mechanicus is by drawing Wondrous Sticks. Your Mechanici are always at level 1 when you begin the stage, but will level up depending on the Wondrous Sticks you draw.
Wondrous Stick Guide

Previous Method of Upgrading

Inazuma's method of upgrading Mechanici is different from the event's run in Liyue, where you could manually choose and upgrade Mechanicus outside of a stage.

List of All Mechanicus

All Mechanicus and Effects

Icon	Mechanicus & Effect
	Veneficus Mechanicus: Inferno Attacks opponents with Blazing Sparks that explode on hit, dealing AoE Pyro DMG.
	Veneficus Mechanicus: Rippling Reflections Rippling Reflections Attacks nearby opponents with Water Cannons that deal 60% ATK as Hydro DMG.
	Veneficus Mechanicus: Furious Discharge Attacks opponents with a Thunder Strike that deals Electro DMG.
	Veneficus Mechanicus: Dust Devil Once deployed, the orientation can be adjusted in the construction menu to attack in different directions. Deals its ATK as AoE Anemo DMG and knocks enemies back.
	Veneficus Mechanicus: Glacial Bloom Periodically fires a Frost Bullet in a straight line. Deals ATK as Cryo DMG to the first opponent it hits.
	Veneficus Mechanicus: Crack Shot Periodically fires an Arrow Shot, dealing DMG to opponents it hits.
	Recovery Mechanicus: Charity When an opponent passes by, this Mechanicus explodes, imprisoning one of the opponents it hits. After its effects have been triggered, it will be destroyed.
	Tandem Mine When an opponent passes by, the Tandem Mine explodes, dealing Pyro DMG to nearby opponents. After its effects have been triggered, this device will be destroyed.
	Mysticus Mechanicus: Arcanum Buffs nearby Mechanici and increases their ATK.
	Arcane Mechanicus: Binding When an opponent passes by, this Mechanicus explodes, imprisoning one of the opponents it hits. After its effects have been triggered, it will be destroyed.
	Arcane Mechanicus: Banishment When an opponent approaches it, this Mechanicus will knock all opponents within its AoE away from itself. Once its effects have been triggered, it will go on cooldown.

Previous Mechanici

Icon	Description
	Veneficus Mechanicus: Tidal Flats Attacks opponents in AoE with Water Cannons that deal Hydro DMG and apply the Wet status.
	Veneficus Mechanicus: Spark Attacks opponents with Blazing Sparks that explode, dealing Pyro DMG in certain AoE.
	Veneficus Mechanicus: Thin Ice Periodically fire a Frost Bullet in a straight line. On hit, deals Cryo DMG to opponents.
	Veneficus Mechanicus: Thunderstrike Attacks opponents with a Thunder Strike that deals Electro DMG.
	Veneficus Mechanicus: Gust Once deployed, the orientation can be adjusted in the construction menu to attack in different directions. Deals Anemo DMG.
	Recovery Mechanicus: Mark I Generates bonus Veneficus Points for each opponent defeated in an AoE around it.
	Ambush Mine Ambush Mine will explode upon contact with opponents, dealing massive Pyro DMG to the surrounding opponents.
	Veneficus Mechanicus: Longbow Periodically fires an arrow shot, dealing Physical DMG to opponents it hits.
	Mysticus Mechanicus: Desire Continously buffs the Veneficus Mechanici in an AoE around it, increasing their DMG.
	Arcane Mechanicus: Portal of Wonders Players can select Arcane Mechanicus: Portal of Wonders to another portal.

List of the Best Mechanici

Recommended Mechanici

The Mechanici not mentioned here are also useful, but you can achieve the elemental effects with characters instead of towers.

Since you cannot directly damage opponents with your characters, you will need damage-dealing mechanici to defeat all the opponents!

Hydro and Cryo Combo

Hydro and Cryo Mechanici go hand in hand together as they can help you Freeze enemies in place before they can reach the end. This allows ranged Mechanici to attack them without missing their shots.

Hydro and Electro Combo

Hydro and Electro Mechanici help in dealing Electro-Charged to enemies, which make doing AoE damage to a group of enemies a lot easier to do. They can also stop some enemies in their tracks when they manage to get a hit.

Pyro Mechanicus

The Pyro Mechanicus can deal a lot of DMG to enemies when it manages to hit. The drawback is that they have a hard time hitting faster enemies, so Freeze or Electro-charge your enemies to keep them in place for the Pyro Mechanicus to attack them.

Genshin Impact Related Guides

Theater Mechanicus Version 2.0 Event Guide

Other Theater Mechanicus Guides

Other Theater Mechanicus Guides
Theater Mechanicus 2.6	Theater Mechanicus 1.3

Theater Mechanicus 2.0 Stage Guides

Related Strategy Guides

Theater Mechanicus Guides
Mechanicus Mastery	Mechanicus Towers
Wondrous Sticks

All Genshin Impact Events

List of Events