Mecha stands for mechanical, and you'll never see one without robots or mechanical suits. It is a sub-genre of action, military and science fiction.

Aldnoah.Zero

24 min, 24 episodes, 1 season \ military - action - mecha - sci-fi - space

Appleseed

24 min, 13 episodes, 1 season \ cyberpunk - action - mecha - military - police - sci-fi

Aquarion Logos

24 min, 26 episodes, 1 season \ mecha - action - romance - sci-fi - fantasy - drama - comedy

Armored Trooper Votoms

22 min, 73 episodes, 4 seasons \ mecha - action - space - military - drama - sci-fi

Astro Boy

25 min, 50 episodes, 1 season \ mecha - action - sci-fi - adventure - kids - super power - shounen

Battle Angel Alita

30 min, 2 episodes, 1 season \ post-apocalyptic - drama - mecha - sci-fi - shounen - cyberpunk

Blame!

5 min, 7 episodes, 1 season \ cyberpunk - sci-fi - mecha

Blue Gender

24 min, 26 episodes, 1 season \ post-apocalyptic - adventure - romance - mecha - military - sci-fi - horror - space - drama

Bokura No

20 min, 24 episodes, 1 season \ seinen - mecha - drama - psychological - sci-fi

Break Blade

22 min, 12 episodes, 1 season \ military - action - shounen - mecha - fantasy

Bubblegum Crisis

45 min, 13 episodes, 2 seasons \ cyberpunk - adventure - shounen - mecha

Burst Angel

25 min, 24 episodes, 1 season \ shoujo-ai - adventure - comedy - mecha - sci-fi

Code Geass

24 min, 50 episodes, 2 seasons \ mecha - action - military - sci-fi - super power - drama - school

DARLING in the FRANXX

24 min, 24 episodes, 1 season \ mecha - action - romance - sci-fi - drama - military

Date A Live

24 min, 34 episodes, 3 seasons \ harem - sci-fi - comedy - romance - mecha - school

Destiny of the Shrine Maiden

24 min, 12 episodes, 1 season \ yuri - supernatural - drama - magic - romance - mecha - shoujo-ai - shounen

Eureka Seven

22 min, 74 episodes, 2 seasons \ mecha - adventure - drama - romance - sci-fi

FLCL

25 min, 18 episodes, 3 seasons \ parody - psychological - mecha - comedy - sci-fi - dementia - action

Full Metal Panic

23 min, 61 episodes, 4 seasons \ mecha - action - military - sci-fi - comedy

Gargantia on the Verdurous Planet

23 min, 13 episodes, 1 season \ post-apocalyptic - action - sci-fi - adventure - mecha

Genocyber

35 min, 5 episodes, 1 season \ splatter - action - sci-fi - horror - psychological - mecha

Ghost in the Shell: Stand Alone Complex

25 min, 64 episodes, 3 seasons \ cyberpunk - action - military - sci-fi - police - mecha - seinen

GunBuster

30 min, 12 episodes, 2 seasons \ mecha - action - comedy - drama - military - sci-fi - space - shounen

Gundam Build Fighters

24 min, 50 episodes, 2 seasons \ mecha - action - sci-fi

Gurren Lagann

24 min, 27 episodes, 1 season \ post-apocalyptic - action - adventure - comedy - mecha - sci-fi

Heavy Object

23 min, 24 episodes, 1 season \ military - action - sci-fi - mecha

Heroic Age

30 min, 26 episodes, 1 season \ space - action - military - sci-fi - mecha

Infinite Ryvius

25 min, 26 episodes, 1 season \ space - military - sci-fi - mecha - drama - psychological

Infinite Stratos

24 min, 24 episodes, 2 seasons \ harem - action - sci-fi - comedy - ecchi - mecha

King Of Braves Gaogaigar

30 min, 69 episodes, 3 seasons \ mecha - adventure - sci-fi - shounen

Knight's & Magic

25 min, 13 episodes, 1 season \ isekai - action - fantasy - mecha - school

Knights of Sidonia

24 min, 24 episodes, 2 seasons \ post-apocalyptic - action - mecha - sci-fi - seinen - space

Lagrange: The Flower of Rin-ne

25 min, 24 episodes, 2 seasons \ mecha - action - sci-fi - comedy

Macross Frontier

25 min, 25 episodes, 1 season \ mecha - action - space - romance - military - music - sci-fi

Martian Successor Nadesico

23 min, 26 episodes, 1 season \ mecha - action - comedy - military - parody - romance - sci-fi - shounen - space

Megazone 23

85 min, 4 episodes, 1 season \ cyberpunk - action - music - sci-fi - mystery - romance - mecha

Mobile Suit Gundam Wing

25 min, 49 episodes, 1 season \ mecha - action - military - space - drama

Neon Genesis Evangelion

24 min, 26 episodes, 1 season \ psychological - action - sci-fi - dementia - drama - mecha - post-apocalyptic

Patlabor: The Mobile Police

25 min, 63 episodes, 2 seasons \ police - comedy - mecha - sci-fi

Schwarzenmarken

25 min, 12 episodes, 1 season \ historical - action - military - sci-fi - drama - mecha

Super Dimensional Fortress Macross

23 min, 36 episodes, 1 season \ mecha - action - music - military - romance - sci-fi - space

Tenchi Muyo! War On Geminar

45 min, 13 episodes, 1 season \ harem - action - comedy - ecchi - fantasy - mecha - school

The Big O

30 min, 26 episodes, 2 seasons \ mecha - action - mystery - sci-fi - psychological

The Vision of Escaflowne

25 min, 26 episodes, 1 season \ isekai - mecha - fantasy - psychological - romance - adventure

Turn Into Gundam

23 min, 50 episodes, 1 season \ mecha - action - military - sci-fi - adventure - space - drama - romance

Undefeated Bahamut Chronicle

24 min, 12 episodes, 1 season \ mecha - action - ecchi - fantasy - school - supernatural - romance - harem

Valvrave the Liberator

25 min, 24 episodes, 2 seasons \ space - action - mecha - military

Vandread

25 min, 26 episodes, 2 seasons \ space - shounen - mecha - sci-fi - ecchi - action

Visions Of Escaflowne

22 min, 26 episodes, 1 season \ mecha - adventure - psychological - romance - fantasy

Voices of a Distant Star

25 min, 1 episode, 1 season \ space - sci-fi - drama - mecha - romance