A comic industry and production studio made by Sean Cook. It started around 2002 with the lineup consisting of,

Sean Cook: Animation
Oscar Bole: Story
Kadir Halil-Shah: Art Supervisor
Ed Sparrow: Story Supervisor

Since then the lineup has changed to 2 people and is sometimes referred to by more serious enthusiasts as MantisJD comics since it teamed up with JD comics. The lineup is

Sean Cook: Story
Rory Donaldson: Art

Rory Donaldson is the creator of JD comics.

Mantis has produced various graphic novels ranging from heavy violence to comedy. Some of these are:

Carnage Comix

Dark Path

Funny Dude, Weird Dude, and Dasder (he appears in the later comics)

Haduri

Over the rain

Stick Mafia

Also recently mantis comics have turned themselves towards animations

A comic created by Thaddeus Peters, also known as the god of our mortal realm.
It stars Comic, the second-best one, Ham, the second-best one, Dog, the second-best one, Snelly, the deceased one, the Turtle, the least-best one, and Red, the best one.

Someone who thinks they’re funny

A way for people to graphically communicate thoughts and everyday experiences, while often having no graphical ability of their own.

Typically assumes the form of a 4-pane comic with badly drawn MS-paint characters to represent one's own response.

Commonly distributed through Reddit, Tumblr, 4chan and similar mediums.

n. A comic that is on the internet and that you can read it and it's funny, but sometimes it's not because it's serious or somtimes it's just stupid.

Poorly-drawn comics that usually describe something funny that happened to the author, using a variety of pre-made "rage faces". They were originally four-panel comics, in which the last panel was of a guy raging. Hence, the name. They usually appear on the site reddit.com.

The most ignorant stuff written on the walls of construction outhouses/toilets/shit houses. Usually accompanied by very crude drawings of naked women, crude drawings of anuses, drawings of the faggy safety guy or douchebag foreman on site, several drawn penises and depictions of them being fellated by men and women, declarations of being gay on a construction site, gang taggings, swasticas, and religious hate.