Most Mysterious Video Game Characters

G-Man - Half-Life

You see him in every Half-Life game made. He talks to the protagonist. But what is he really saying, and why is he so interested in you? What's his motive, what's his final goal, and why does he watch you from the shadows?
The G-Man is, in my opinion, the most mysterious video game character who's not randomly thrown into a mix of 20 other characters, especially when considering this is a single-player game. Extra credit to the devs for making him relevant and an essential character in the game.

"Time? Dr. Freeman? Is it really that time again...?"
G-Man is a man who sees what he does. He sees what he wants. He is anonymous, and yes, even better than Master Chief, Lara Croft, or even Duke Nukem! But still, he is stronger than anyone. He can do anything. He is, in fact, an international man of mystery.

Toadette - Super Mario

Toadette is a character in the Mario series. She is a female Toad who first appeared in the Nintendo GameCube game Mario Kart: Double Dash!! in 2003. Since then, she has appeared in multiple Mario titles, often as a playable character.

The Amalgamates - Undertale

Kabal - Mortal Kombat

Kabal is a character in the Mortal Kombat fighting game series, who made his debut in Mortal Kombat 3.

Yes, we have some info about Kabal, but it only gives us more questions than answers! He's a very mysterious guy, and I love it.

Kabal has a very interesting storyline, but still, we don't know much about him. He is an intriguing character.

The Kid - Bastion

Fassad - Mother 3

Slim Cognito - Ratchet & Clank

Zanza - Xenoblade Chronicles

Elusive Man - Mass Effect

A middle-aged guy with biotic prosthetic eyes, a Texan accent, and a lot of credits is 3rd place from the tip of the iceberg.

Dickson - Xenoblade Chronicles

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Chara - Undertale

Chara is a character in the game Undertale by Toby Fox and is one of the seven humans to fall into the Underground before the protagonist. The name Chara is chosen by the player at the start, though it is later revealed that this name actually belongs to the first fallen human. During the Genocide Route... read more

With all the talk about Sans and Gaster, it's easy to forget just how little we know about Chara. Beyond being a human child who fell into the Underground, got adopted by the Dreemurr family, died of illness, had their soul taken by Asriel, and became a ghost that seemingly possesses Frisk to make them kill all the monsters in the Underground, there is literally no information on who Chara is.
Why do they want all the monsters to die? Why is Frisk choosing not to finish the job of erasing the world worth killing Frisk over? And why does Frisk choosing to erase the world simply send them back to the beginning with Chara now seemingly having fully corrupted them just so they can kill everyone again?
If a ghost is created as the result of someone having unfinished business and a strong enough desire to finish it, then why is Chara a ghost, and what do they want to finish before accepting eternal rest? Are they really evil, or is their desire for bloodshed the result of being the manifestation of one with no soul? Is this the fate that awaits Frisk if they let themselves be consumed by a need for violence?
Did the other six human children whose souls are in the possession of Asgore ever get possessed by Chara? Why choose Frisk? Are Frisk and Chara's souls the same, or is the red color of Frisk's soul due to Chara's possession? We could ask a thousand questions about Chara, but none would have answers.

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Daisy - Super Mario

Princess Daisy is a fictional character in the Mario series of video games, in which she is the princess of the fictional region of Sarasaland. She first appeared in the 1989 game Super Mario Land. Daisy has since become a recurring character in various Mario spin-off games, particularly in sports and... read more

Ryu - Ninja Gaiden

A lot of people haven't played this game, so compare him to Raizo from Ninja Assassin. Mysterious but deadly.

Gaster - Undertale

W. D. Gaster is a mysterious character from the game Undertale. He was once the Royal Scientist before Alphys, but was erased from existence after a lab experiment went wrong. Though not directly encountered in the game, Gaster's presence is hinted at through cryptic messages and rare NPC encounters... read more

OK, we don't even know his name for sure. The only things we know are what he looks like (not well) and entry number 17.

He's really mysterious and strange.

We know so little about him. He's one of the most mysterious characters by far.

Alvis - Xenoblade Chronicles

Big Boss - Metal Gear

Can't really describe this guy, but he's a beast compared to Marcus, Gordon Freeman, and the Master Chief.

Strange Man - Red Dead Redemption

I haven't played Redemption, but a character literally called Strange Man is worthy of this list for sure.

War - Darksiders

Had to let one of the Four Horsemen of the Apocalypse be on the list.

Samantha Maxis - Call of Duty: Black Ops

Zer0 - Borderlands 2

Q - Street Fighter

We don't really know if Q is male or female. We don't know if Q is human, robot, or cyborg. We don't know Q's background or motives. We don't know if Q is good or bad. We don't know Q's abilities, and we don't know how strong Q is. We don't know why Q mumbles everything they say. I know NOTHING about this person, which is why Q should be at least in the top 5.

If he's not gonna say anything, I'm not gonna comment.

The Boss - Metal Gear Solid

She is one force not to reckon with.

Wander - Shadow of Colossus

It is true that he is mysterious, but this is enough and really well done.

He's in one of the best games ever. He beats Ratchet and Clank in a duel.

Ermac - Mortal Kombat

Ermac is a fictional character in the Mortal Kombat fighting game franchise developed by Midway Games. He originated from rumors about a diagnostics menu in the original game that displayed the term ERMACS, which some players believed indicated a secret character. Due to fan interest, he was eventually... read more

Sans - Undertale

Sans, or Sans the Skeleton, is a character in the 2015 RPG Undertale, created by Toby Fox. He is a lazy, pun-loving skeleton who serves as a supporting protagonist in the "Pacifist" and "Neutral" routes of the game, and a heroic antagonist and final boss in the "Genocide" route. Sans is known for his... read more

Happy Mask Salesman - The Legend of Zelda: Majora's Mask

That smile alone, dear god. Also, the way he moves when he's talking is creepy. He jolts around and switches emotions faster than you can say pop.

He will keep you awake at night.