Cave Johnson
Portal series
Portal2 cave johnson and caroline
Cave Johnson (left) and his assistant Caroline as they appear in Portal 2.
First appearance Portal 2 (2011)
Created by Erik Wolpaw
Voiced by (English) J.K. Simmons

Cave Johnson is a fictional character in the 2011 video game Portal 2. He is portrayed by American actor J. K. Simmons and created in part by Portal 2's designer Erik Wolpaw. To date he only appears in Portal 2. Cave serves as a guide to the player-character Chell as she explores an abandoned part of the Aperture Science facility, though all of his messages are pre-recorded from before the events of the Portal games.

Concept and creation

Cave Johnson was created by designer Erik Wolpaw and is voiced by actor J.K. Simmons.[1] His physical appearance is based on that of Portal 2 lead animator Bill Fletcher.[2] He is described as an "eccentric dead billionaire" and "extroverted, enthusiastic and opinionated." He was the founder and CEO of Aperture Science.[3] He was also a "shower curtain visionary."[4] He was initially considered to be the main character of Portal 2, where players were in control of him as he was trapped inside of a computer. This idea was scrapped, however.[5] They later envisioned Cave Johnson as the primary antagonist, but this was also scrapped. This idea was revealed as a result of leaked quotes from the character.[6][7]

Johnson was envisioned since Portal as an "industrial, Southern guy" who would contrast the "anti-septic" and "politically correct" nature of Aperture Science.[8] Though their idea of the character underwent several changes over the development, the selection of J.K. Simmons helped to solidify the character.[8] Pictures of Cave Johnson appear throughout Portal 2, and though Valve used a casting call to try to find someone to use as a template, they turned back to their own lead animator, Bill Fletcher, for Cave's face.[6] Though comparisons have been made between Cave and Andrew Ryan, the wealthy industrialist that created the fictional underwater city of Rapture in BioShock, Wolpaw claims they had not considered this character in their creation of Cave.[9]


Cave Johnson's only appearance to date is in the 2011 video game Portal 2. His actor, J.K. Simmons, spoke original lines for various trailers for Portal 2, including at the PAX East exposition in 2011.[10][11] He does not appear as himself, but instead he is heard by the player-character Chell as she traverses abandoned parts of the Aperture Science facility in pre-recorded messages that explain the area as well as some of the backstory of Aperture. In these pre-recorded messages, he is sometimes accompanied by or makes reference to a woman named Caroline. As Chell progresses through this area and hears more and more messages, the messages appear to indicate a decline in Aperture as well as himself. He eventually contracts a deadly illness after grinding up moon rocks, which he turns into Conversion Gel, and begins discussing the prospect of putting a person's mind inside of a computer. He indicates that if the process isn't able to be done on him before he dies to put Caroline in charge, even forcibly if necessary. This leads us to find out Caroline is in fact the personality on which the GLaDOS computer system controlling Aperture Science's testing course is based. While Johnson doesn't actually say Caroline was supposed to be put into a computer against her will,[12] this might have been done as a result of confusion amongst his engineers about his final instructions, or because it was the best way for her to properly control the entire testing facility.


JKSimmons07TIFF (cropped)

J.K. Simmons received positive reception for his portrayal of Cave Johnson.'s Steve Watts compared Cave Johnson to the industrialist Howard Hughes.[3] A writer for Edge wrote that the "surprise star turn" was J.K. Simmons as Cave Johnson. The editor described him as a "gruff and acid alpha male who set up Aperture, who performs with real brio and bite" and that while it would be hard to quote him, his lines were "perfectly pitched, and funny to the bone".[13] PALGN's Adam Ghiggino wrote that the dialogue of Portal 2 was funny and cited Simmons as an example.[14] GamesRadar's Tyler Wilde called Cave "bombastic" and praised Simmons for "perfectly" portraying him.[15] GameSpy's Will Tuttle wrote that it is "hard not to feel oddly honored to take part in some of the experiments that ranged across his entire career". He also wrote of Simmons that his voice "adeptly blend gravitas and silliness, and I found his segment to be just as great the second time I played through the game".[16] GamePro's Will Herring wrote that Valve should be "commended" for the introduction of the character.[17] Official Xbox Magazine's Jon Hicks described Cave as a "cigar-chewing, damn-the-expense-and-particularly-the-health-restrictions" type.[18]

Computer and Video Games' Andy Robinson described Cave's personality as "loud" and that Simmons is "on form here".[19] GameZone's Ben PerLee described Cave as "the typical tycoon mastermind/crazy man, so stubborn in his ways, government and basic human rights be damned" and that "his suggested history with GLaDOS provides an amazing focal point for the second entry".[20] PC Gamer's Dan Stapleton wrote that Cave's "comically sociopathic approach to science is second only to GLaDOS’". He also praised Simmons for his portrayal of Cave because of his "fittingly cantankerous voice".[21] Giant Bomb's Ryan Davis called Simmons' portrayal "terrific" and described Simmons as a "perennial tough-talker and boss-man-type".[22] CNN's Larry Frum praised Cave's "sarcastic, shoot-from-the-hip attitude" for its contribution to the game's dialogue.[10] ABC News' Lou Kesten wrote that Cave was a "memorable" character, and that Simmons helped in portraying what he thought was one of the three "most distinctive characters in video games" along with Wheatley and GLaDOS.[23] The Wall Street Journal's Ryan Kuo wrote that Cave's "gruff proclamations are somewhat more grating than his synthetic counterparts" and that "for better or worse, it’s also impossible to un-see J.K. Simmons once you know it’s him speaking".[24]


"By fulfilling the expected obligations of a 1950s 'wife,' Caroline sounds as if she might as well be married to Johnson, and after all, given Johnson's alignment with American exceptionalism and what it can achieve through technology, he is the 'science' that she has married herself to."

—Quote from Associate Professor of English at University of Wisconsin-Stevens Point, G. Christopher Williams.[25]

Williams also discussed the relationship between Caroline, the form she held before she became GLaDOS, and Cave Johnson. He wrote that the relationship of Caroline and Johnson fulfilled the "adage that 'behind every good man is a good woman,' since he depends on Caroline to fulfill the role of executing his directives as well as providing comfort and support for the man in charge, himself". He added that "while Johnson warns his listeners jokingly that 'pretty as a postcard' Caroline is off limits because 'She’s married. To Science,' he may as well be simply warning off potential suitors for personal reasons" and wrote that "he is the 'science' that she has married herself to."[25]


  1. Miller, Greg (2011-03-11). "PAX: Portal 2 Nabs J.K. Simmons". IGN. Retrieved 2011-03-11. 
  2. "Photo of Bill Fletcher". 
  3. 3.0 3.1 Watts, Steve. "Rumor: Casting Call Hints at Portal 2 Plot". Retrieved 2011-08-02. 
  4. "Catch Up on Portal 2 - Features at GameSpot". 2011-04-13. Retrieved 2011-08-02. 
  5. Alexander, Leigh (2011-05-06). "Valve's Wolpaw Offers Behind-The-Scenes Peek Into Portal 2". Gamasutra. Retrieved 2011-05-06. 
  6. 6.0 6.1 Saltzmann, Marc (2011-04-14). "Five things you didn't know about 'Portal 2'". USA Today. Retrieved 2011-04-14. 
  7. Walker, John (2011-04-27). "Valve On Portal 2: Spoiler Interview Part One". Rock Paper Shotgun. Retrieved 2011-04-27. 
  8. 8.0 8.1 Braga, Matt (2011-04-19). "Q&A with Portal 2 writers Erik Wolpaw and Jay Pinkerton". National Post. Retrieved 2011-04-20. 
  9. Stanton, Rich (2011-04-26). "Erik Wolpaw on Portal 2’s ending: "the [spoiler is probably lurking out there somewhere""]. PC Gamer. Retrieved 2011-04-26. 
  10. 10.0 10.1 "'Portal 2' is a dark, humorous joy (and that's no lie)". CNN. 2011-05-11. 
  11. "Cave Johnson Introduces Portal 2's Long Fall Boots - Xbox". 2011-04-12. Retrieved 2011-08-02. 
  12. "‪Funny Cave Johnson Quotes - [Portal 2]‬‏". YouTube. 2011-04-24. Retrieved 2011-08-02. 
  13. "Portal 2 Review - Edge Magazine". 2011-04-19. Retrieved 2011-08-02. 
  14. Adam Ghiggino21 Apr, 2011 (2011-04-21). "Portal 2 Review - PlayStation 3 Video Game Review - PAL Gaming Network". Retrieved 2011-08-02. 
  15. "Portal 2 super review, Portal 2 Review, PS3 Reviews". Games Retrieved 2011-08-02. 
  16. "GameSpy: Portal 2 Review - Page 1". Retrieved 2011-08-02. 
  17. post a comment. "Portal 2 Review from". GamePro. Retrieved 2011-08-02. 
  18. "Portal 2 review - Xbox 360 - Official Xbox 360 Magazine". 2011-04-19. Retrieved 2011-08-02. 
  19. Andy Robinson. "Review: Portal 2". Retrieved 2011-08-02. 
  20. "Portal 2 Review |". Retrieved 2011-08-02. 
  21. "Portal 2 review". PC Gamer. 2011-04-19. Retrieved 2011-08-02. 
  22. "Portal 2 Review". Giant Bomb. 2011-04-19. Retrieved 2011-08-02. 
  23. By LOU KESTEN Associated Press (2011-04-20). "Review: 'Portal 2' a Blast for the Thinking Gamer - ABC News". Retrieved 2011-08-02. 
  24. Kuo, Ryan (2011-04-19). "Portal 2 Is A Hole In One". The Wall Street Journal. 
  25. 25.0 25.1 by G. Christopher Williams. "“Her Name Is Caroline”: Identifying the Misbehaving Woman in 'Portal 2' < PopMatters". Retrieved 2011-05-05. 

Template:Portal series

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