Manga like Alien Headbutt

Kinnikuman

Status: Releasing
Genres: Action , Comedy , Sports

Kinnikuman (a.k.a. Kinniku Suguru) is a cowardly, clumsy, moronic, gyuudon-devouring excuse for a superhero (or Choujin)... who just happens to be the prince of an alien planet. But despite his pathetic appearance, he is very honorable and can become quite powerful when he needs to be. With his sidekick Meat-kun and fellow Choujins Terryman and Ramenman there to help him, Suguru quests to become the greatest Choujin on the planet. Whether with a combination of tremendous heart and stamina (The Burning Inner Strength) or the "Power of Friendship", Kinnikuman frequently defeats villians 10 times more powerful than him and often causes his enemies to have a change of heart and join him. Though he seems destined to be an idiot forever, slowly but surely Kinnikuman becomes worthy of the title "Hero".

Notes:
Between volumes 36 and 37 publication there's 22 years gap. From volume 38 onwards starts restarted in 2011 version.
Kinnikuman won the 30th Shogakukan Manga Award for best children's manga in 1984.

Tags: Wrestling , Martial Arts , Shounen , Super Power , Primarily Male Cast , Aliens , Parody , Meta , Surreal Comedy , Slapstick , Primarily Adult Cast , Superhero , Gods , Kaiju , Travel , Space , Disability

Dear Anemone

Also known as Dear Anemone.

Status: Finished
Genres: Horror , Supernatural , Thriller

When Gaku lands on the Galapagos Islands, a paradise is the last thing he'll be experiencing. With creatures undergoing horrific evolutions, only one rule still stands--the survival of the fittest!



Tags: Chimera , Survival , Male Protagonist , Body Horror , Environmental , Military , Shounen , Gore , Shapeshifting , Foreign , Eco-Horror , Anthropomorphism , Primarily Male Cast , Animals

MAD

Also known as MAD.

Status: Releasing
Genres: Action , Sci-Fi

Mysterious alien life-forms invade Earth! Most of humanity is wiped off the face of the planet. John, his sister, and the remaining survivors hope to find a new world to inhabit… But one day, they’re targeted by aliens again!



Tags: Aliens , Post-Apocalyptic , Tragedy , Cult , Human Experimentation , Henshin , Shounen , Male Protagonist , Guns , Tokusatsu , Cannibalism , Swordplay , Monster Girl , Monster Boy

Jigokuraku

Also known as Hell’s Paradise: Jigokuraku.

Status: Finished
Genres: Action , Adventure , Mystery , Supernatural

Gabimaru the Hollow is one of the most vicious assassins ever to come out of the ninja village of Iwagakure. He’s ruthlessly efficient, but a betrayal results in him being handed a death sentence. He has only one hope—in order to earn his freedom, he must travel to a long-hidden island and recover an elixir that will make the shogun immortal. Failure is not an option. On this island, heaven and hell are just a hair’s breadth away.



Tags: Survival , Samurai , Philosophy , Mythology , Ninja , Ensemble Cast , Anti-Hero , Gore , Tragedy , Historical , Gods , Primarily Adult Cast , Male Protagonist , Eco-Horror , Assassins , Swordplay , Body Horror , Battle Royale , Gender Bending , Shounen , Nudity , Arranged Marriage , Heterosexual , Super Power , Travel , LGBTQ+ Themes , Amnesia , Crime , Yandere , Religion

Terra Formars

Also known as Terra Formars.

Status: Releasing
Genres: Action , Adventure , Horror , Sci-Fi

After humanity’s first manned mission to the Red Planet was lost, a second expedition arrives. The explorers prepare to exterminate the cockroaches that were used to transform the Martian environment, but are shocked to discover that the insects have mutated into giant, aggressive humanoids with one overriding goal—exterminate the humans! However, this crew of explorers has each undergone the “Bugs Procedure,” terrifying experimental surgery designed to make them more than human…



Tags: Aliens , Henshin , Super Power , Tragedy , Seinen , Ensemble Cast , Espionage , Martial Arts , War , Space , Tokusatsu , Gore , Shapeshifting , Male Protagonist , Primarily Adult Cast , Politics , Military , Dystopian , Conspiracy

Tiger Mask

Also known as Tiger Mask.

Status: Finished
Genres: Action , Sports

In the manga and anime, Tiger Mask (whose real name was Naoto Date) was a feared heel wrestler in America who was extremely vicious in the ring. However, he became a face after returning to Japan when a young boy said that he wanted to be a villain like Tiger Mask when he grew up. The boy resided in an orphanage, the same one that Tiger Mask grew up in during his childhood. Feeling that he did not want the boy to idolize a villain, Tiger was inspired to be a heroic wrestler.
The main antagonists in the manga and anime was Tiger's Cave, a mysterious organization that trained young people to be villainous heel wrestlers on the condition that they gave half of their earnings to the organization. Tiger Mask was once a member of Tiger's Cave but no longer wanted anything to do with them, instead donating his money to the orphanage. This infuriated the leader of the organization and he sent numerous assassins, including other professional wrestlers, to punish him.
Most of the environment and characters were fictitious, but real-life pro wrestlers Antonio Inoki and Giant Baba were included in the manga and anime as well.



Tags: Wrestling , Shounen , Revenge , Foreign

Centuria

Also known as Centuria.

Status: Releasing
Genres: Action , Adventure , Drama , Fantasy

Sold into slavery by his own mother, Julian has known nothing but pain and brutality. All that changes when, aboard a slave ship, he experiences the kindness and the tender touch of a loving person for the first time. But fate has plans for Julian in the blood awakening of an ancient god who strikes a cruel bargain: an innocent life in exchange for extraordinary powers—ones he must use to protect a helpless baby in a cruel and violent world!



Tags: Found Family , Tragedy , Fugitive , Super Power , Male Protagonist , Adoption , Royal Affairs , Medieval , Gods , Shounen , Slavery , Necromancy , Time Skip , Gore , Anthropomorphism , Yuri , Villainess

Ayashimon

Also known as Ayashimon.

Status: Finished
Genres: Action , Supernatural

Maruo, a boy starved for battle, meets Urara, a girl trying to escape from underworld thugs...



Tags: Youkai , Yakuza , Male Protagonist , Shounen , Female Protagonist , Urban Fantasy , Meta , Surreal Comedy , Parody , Motorcycles , Dragons , Crossdressing

ALIENS AREA

Also known as Aliens Area.

Status: Finished
Genres: Action , Fantasy

Tokyo, Planet Earth... High schooler Tatsumi Tatsunami lost his parents at a young age and now works multiple part-time jobs to live a hectic but peaceful life with his younger siblings. One day his body undergoes a sudden change... And now mysterious beings are showing up at his house! In order to protect the people he holds dear, in order to protect Earth (or "area"), Tatsumi must awaken! He better, because "they" are already here!



Note: Includes the one-shot "Hirage! Nyorai-kun" (ひらけ! にょらいくん, Exposed! With Nyorai) and two extra chapters.

Tags: Shounen , Aliens , Male Protagonist , Police

Kengan Ashura

Also known as Kengan Ashura.

Status: Finished
Genres: Action , Sports

Since the Edo periods of Japan, gladiator arenas exist in certain areas. In these arenas, wealthy business owners and merchants hire gladiators to fight in unarmed combat where winner takes all. Tokita Ohma, nicknamed "Ashura", joins these arenas and devastates his opponents. His spectacular ability to crush his enemies catches the attention of the big business owners, including the Nogi Group chairman, Nogi Hideki.



Note: Includes 24 extra chapters.

Tags: Martial Arts , Ensemble Cast , Wrestling , Male Protagonist , Primarily Adult Cast , Primarily Male Cast , Boxing , Tragedy , Athletics , Shounen , Revenge , Gore , Yandere , Gambling , 4-koma , Historical