Though it hasn’t released many original games in the last decade, Valve’s history of industry-changing titles has made them a powerful force in gaming. Valve has been mostly known for operating Steam (as well asCS:GOandDOTA 2), but their past titles are what made the company what it is today.

RELATED:The Best Valve Software Games, According To Metacritic

One thing that set Valve games apart from other titles of their time was their completely unique characters. BeforePortal, the use of asnarky and oftentimes rude narratorwas completely new, and the memorable characters of theLeft 4 Deadseries made battling the hordes less horrific. For all of their iconic characters, though, only some have stayed in the gaming zeitgeist even in 2021.

10Phoenix Terrorist - Counter-Strike: Source / CS:GO

Counter-Strike: Source(CSS) wasan absolutely massive gamein the early PC days of the 2000s. Just like inCS:GO, there’s a team of Terrorists and a team of Counter-Terrorists with a handful of player models to choose from upon spawn for each side.

MostCSSplayers will recognize the Phoenix Terrorist skin instantly; it was the most popular skin for the Terrorist side and something of an iconic character forCSSin general, even without any kind of personality or story attached to it.

Valve Iconic Characters Phoenix Terrorist CSS

9Cave Johnson - Portal 2

One doesn’t have to stray too far into the gamer side of the internet to find Cave Johnson quotes still posted everywhere to this day. He’s voiced by none other than J.K. Simmons, the actor behind J. Jonah Jameson in theSpider-Manmovies, and hisnarration throughoutPortal 2is, in a word, memorable.

Portal 2fans won’t soon forget his rant on what to do when life gives you lemons, nor will they forget his haphazard approach to scientific safety.

JK Simmons and cave Johnson side by side

8G-Man - Half-Life / Half-Life 2

The enigmatic G-Man from theHalf-Lifeseries is the first character players meet inHalf-Life 2in the introductory cutscene, and his role in the game is still something of a mystery for many. His deeply disturbing face, along with his businessman appearance and briefcase, make for one unsettling NPC.

RELATED:Best Half-Life: Alyx Mods And How To Install Them

Valve Iconic Characters G Man Half Life

PC gamers who started their Source Engine journey inGarry’s Modfind it hard to take the character seriously anymore, but nonetheless, he’s one spooky dude with a strange manner of speech.

Every character from theLeft 4 Deadseries is memorable in their own way. Coach is loud and large, Francis always has an attitude, Louis goes hog-wild for some pills, and Zoey and Bill have some great interactions. But out of all eight survivors across both games, Ellis stands out.

Valve Iconic Characters Left 4 Dead Ellis

He’s bombastic, he has no filter, he always seems tomisunderstand what’s going on, and his voice lines consequently are the funniest in the game thanks to his absurd reactions to most situations.

6Chell - Portal / Portal 2

While the player never really sees Chell in eitherPortalorPortal 2without the use of portals, she is nonetheless one of Valve’s most iconic and instantly recognizable characters. As the protagonist (and player character) of both games, she is at the center of it all.

Chell’s model depicts her as a Latina or multiracial woman wearing an orange Aperture Science jumpsuit, sometimes tied around her waist. She doesn’t say anything during the game, too, which prompts GLaDOS to call her a “dangerous, mute lunatic” – an apt description, all things considered.

Chell (Portal)

5The Boomer - Left 4 Dead

Of all the special zombies in theLeft 4 Deadseries, the Boomer is the most iconic. While theWitch might be more terrifying, or the Spitter more deadly, the engorged, explosive mass of a Boomer makes them stand above the rest of the horde.

Much ofLeft 4 Deadwas inspired by zombie classics likeDawn of the Deadand28 Days Later, but the Boomer is one grotesque zombie archetype that Valve can call their own.

Valve Iconic Characters Boomer Left 4 Dead

4Gordon Freeman - Half-Life / Half-Life 2

TheHalf-Lifeseries has always been at the forefront of gaming technology-wise, and it’s one of the only series where the protagonist is an accomplished Ph.D. scientist. Despite never being seen in eitherHalf-LifeorHalf-Life 2, Gordon Freeman is instantly recognizable thanks to the games' box art (as well as countless memes).

RELATED:Crazy Pieces Of Cut Content In Half-Life 2 (That We Wish Stayed In)

Gordon Freeman & Alyx Vance From Half-Life

While he’s not a particularly interesting character on his own, Gordon Freeman is central to the plot in both games. There might not ever be aHalf-Life 3, but if there is, Gordon Freeman will certainly be brought back, crowbar in hand.

3The Heavy - Team Fortress 2

There are 9 playable classes inTeam Fortress 2, each with their own complete personalities, quirks, and of course playstyle differences. They’re all iconic and hilarious in their own way, but the Heavy is most commonly used to represent the game across the board.

Poker Night at the Inventoryfeatures the Heavy as a player, for example. His voice lines and character model have probably been used in moreGarrys Modvideos than one can count, too.

Valve Iconic Characters Heavy Team Fortress 2 TF2

2Alyx Vance - Half-Life 2

Alyx Vance is one of the main protagonists throughoutHalf-Life 2, and even received her own prequel game in 2020 for VR titledHalf-Life: Alyx. She’s central to the player finding their way throughoutHalf-Life 2and its DLCs, and she’s nothing if not encouraging and earnest.

She’s a serious force to be reckoned with in combat, too – and Alyx isn’t just the daughter of a scientist, she’s a scientist in her own right too. She’s a fantastic companion and the progression of her story through both episodes is often more engaging and heart-wrenching than Gordon Freeman’s.

Alyx from Half-Life Alyx

1GLaDOS - Portal / Portal 2

When one considers the most iconic Valve characters, there’snobody who can top GLaDOS. BeforePortal, the idea of using a sarcastic and often downright antagonistic narrator was nearly unheard of, but now it’s nearly impossible to find a sci-fi puzzle game without one.

GLaDOS has some of the most iconic lines in gaming history and is an enemy completely unique to thePortalseries. The songs GLaDOS sings at the end of each game are fantastic, if not a bit overplayed, and the character’s influence on modern games and snarky narrators cannot be understated.

GLaDOS