Mark Twain

{{Character Manga= Anime=
 * image =
 * -|-|kanji = マーク・トウェイン
 * romaji = Māku Tōein
 * also known as = Great Twain (by himself}
 * namesake = Mark Twain (American writer)
 * gender = Male
 * age = 22
 * birthday = November 30
 * height = 178 cm (5'10")
 * weight = 68 kg
 * eye color = Light green
 * hair color = Orange
 * bloodtype = B
 * status = Alive
 * likes = Himself, praise, adventure
 * dislikes = Plain-old work
 * occupation=The Guild member (former)
 * affiliation = The Guild (former)
 * ability name = Huck Finn and Tom Sawyer
 * reference = Adventures of Huckleberry Finn The Adventures of Tom Sawyer
 * manga debut = Chapter 18
 * anime debut = Episode 17
 * seiyuu = Hiroyuki Yoshino
 * english va = Phillip Reich
 * name=|also known as=|family=|light novel debut=|stage actor=}}

Mark Twain (マーク・トウェイン,) is a former member of the Guild, and his ability is Huck Finn and Tom Sawyer.

Appearance
Twain has dark orange hair which is swept outwards and green eyes. He wears a long white sleeve shirt with buttons that are always undone and black pants with the suspenders down. He wears black sandals and black bracelets around his ankles. On his left wrist are two brown bands.

Personality
Twain is generally a jovial and cheerful individual, in contrast with most of his fellow Guild members. As such, he would usually suggest that they go on excursions to spend some leisure time when given a chance altogether, but they would simply reject his idea in the process. Nonetheless, he is quite close with them until the organization's eventual dissolution, considering the Guild to be a rather nice place.

As one of the Guild's snipers, he takes considerable pride in his marksmanship and ability, wherein he keeps a personal record of his endeavors that utilize such skills in his "success diary". Twain would also frequently dote on his doll-like companions Huck and Tom for their skillful marksmanship.

Despite this lighthearted attitude, Twain can become serious at times during combat, especially when dealing with an opponent who challenges his sniping skills like Atsushi Nakajima, whom Twain has admitted to be the strongest adversary in his success diary. In spite of his confidence in his own skills, it is not impossible for Twain to acknowledge his opponent's expertise. Hence, he easily and amicably accepts defeat when he is apparently bested by such adversary.

Ability
Huck Finn and Tom Sawyer (ハック・フィン&トム・ソーヤ,) is an ability that takes the forms of the doll-like creatures known as Huck Finn and Tom Sawyer.

With his ability, Twain can shoot with absolute accuracy by attaching either Huck or Tom to one of his bullets. Since Huck's and Tom's minds are also linked, he can perform long-distance surveillance using them.

Background
Little is known about Twain, and his life before his membership in the Guild nor his reasons for joining it are not specified. However, it is quite possible that he has worked on his success diary for quite some time, most likely having started it back in his hometown.

The Guild Arc
Twain first shows up along with Howard Phillips Lovecraft, John Steinbeck, Nathaniel Hawthorne, Margaret Mitchell, and Herman Melville during the fight between Kōyō Ozaki and Atsushi Nakajima with Kyōka Izumi. Later, as the three-way war rages on, Twain acts as a sniper shooter who shoots Atsushi and Kyōka in order for Francis Scott Key Fitzgerald and Herman to kidnap Atsushi.

After Atsushi escapes from the Moby Dick, Twain acts as a sniper to prevent him from landing safely to Yokohama using his ability. Though successful in puncturing Atsushi's parachute on his way down, the latter fully transforms into a tiger, which allows him to land on the ground unscathed. Twain continues to attack him with a barrage of .50-caliber bullets, but Atsushi manages to evade them all. Twain then prepares to shoot him once more, but Atsushi almost vanishes due to his quick speed before Twain can even fire.

Surprised with Atsushi's incredible endurance and reflexes, Twain turns serious and shoots a tanker truck in front of Atsushi, heavily injuring Atsushi from the blast. He then rains down a surge of shots at Atsushi and immobilizes him. Twain declares the end of their battle, deeming Atsushi as his greatest adversary in his "success diary". However, Osamu Dazai intervenes, nullifies the curse by touching Q's doll, and sets off a saturation chaff smokescreen that jams Twain's infrared sensors and radar. Acknowledging how his opponents placed their trust in each other that yielded to their true victory, Twain jovially admits his defeat.

After evacuating the Moby Dick, he is seen escorting a captured Lucy out of a helicopter. He is then shown along with Steinbeck, Lucy, and Alcott driving away in a car.

After the Guild war, he and the other Guild members were discussing the fate of the Guild. Twain decides to return home in order to finish his own autobiography.

Appearances
{{Appearance
 * Chapters =

The Guild Arc

 * Chapter 18 - Flowers and Autumn Leaves, Snow and Gold
 * Chapter 26 - Will of Tycoon (image)
 * Chapter 27 - Upon the Shattering Shores
 * Chapter 29 - Even If My Head Be Mistaken
 * Chapter 33 - A White Whale, into the Oceans of Heaven
 * Chapter 37 - Closing the Party
 * Episodes=

The Guild Arc
}}
 * Episode 17 - Three Companies Conflict
 * Episode 20 - Though the Mind May Be Wrong
 * Episode 22 - Part 1: Poe and Rampo; Part 2: Moby Dick, Swimming in the Sky
 * Episode 24 - If I May Shed Away My Burden Now

Quotes

 * (about Atsushi Nakajima) "You were definitely my top rival in the Adventures of Mark Twain."

Trivia

 * Twain appeared in the Japanese mobile game Love Heaven along with several other characters as a limited-time event.
 * Twain shares his birthday with another Guild member, Lucy Maud Montgomery, on November 30.
 * Twain is thus far one of the two characters with an ability that has more than one different references to its name (Adventures of Huckleberry Finn and The Adventures of Tom Sawyer). The other ability user with a similar case is Edgar Allan Poe, whose ability is a reference to two stories.