In: Characters
 Posted: 2005
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Red (Sleepwalker), Brown (Rick)


Appearance, costume, scars...


None (Sleepwalker), Brown (Rick)






Able to traverse the realms of the mind.


Imaginator-an object which banishes captured foes to other areas of the Mindscape. Sleepwalker lost his when Rick mistook it for a weapon and threw it away. He had reclaimed it once to defeat Cobweb but it was never seen since.


Sleepwalker is at the mercy of Rick's sleeping habits. If Rick should wake up Sleepwalker will be pulled back into his mind. He also relies on that to recharge his powers as the longer he is out in the real world the weaker they become. Sleepwalker is also addicted to the light spectrums produced by an object known as the Synthetic Diamond, which turns him into a common junkie.


Levitation, resistance to injury, reality bending warp eye beams (used solely on inanimate objects due to a Sleepwalker vow).

Strength Level:

Sleepwalker is able to lift between 800 lbs and 25 tons.


Mindscape (Sleepwalker), United States (Rick)

Created By:

Bob Budiansky

Current Aliases:

Rick Sheridan (human host)

Current Groups:

If any, or "None".

Current Occupation:

Super hero (Sleepwalker)

Dual Identity:

Known by some enemies.


Sleepwalker's is unknown, but Rick is attending college

Former Groups:

Secret Defenders

Former Occupation:

Defender of the Mindscape (Sleepwalker), building super (Rick)

Known Allies:

Spider-Man, Darkhawk

Known Confidants:

Rambo (Rick's dog), Dr. Charles Warren Fong

Legal Status:

None, although Sleepwalker is wanted by some federal agencies

Major Enemies:

8-Ball, Office of Insufficient Evidence, Mr. Jyn, Chain Gang, Cobweb, Spectra

Marital Status:


Place of Birth:


Real Name:


Usual Bases:

Brooklyn, NY


The Sleepwalkers are a race of alien beings that patrol the dimension known as the Mindscape, which borders every mind in existence. Their mission is to prevent evil forces from invading the vulnerable minds of beings to feed on their mental energies. Sleepwalker had encountered the worst evil of all, the villainous Cobweb, trying to access the mind of college student Rick Sheridan. It turned out to be a trap as Cobweb had taken an exceptional disliking to this particular Sleepwalker. Although his attack was "repelled", Sleepwalker was drawn in too close to Rick's mind and became trapped within.

However, it was soon discovered that Sleepwalker could emerge from Rick's mind into our world whenever Rick fell asleep. This world strange and new, Sleepwalker observed until he recognized what humans might consider evil in the form of crime and stepped in to foil a robbery. When a police sketch surfaced on the news of Sleepwalker, Rick recognized it from his dreams and vowed never to sleep again lest the creature be released back on the world.

After a constant struggle for Sleepwalker to regain freedom from Rick's mind and Rick refusing to sleep to let him, Sleepwalker had confronted Rick and used his dreams to explain to him his purpose and story. Despite some uneasy feelings, Rick came to an understanding with Sleepwalker and allowed Sleepwalker the freedom of the night. Although, there have been times when the two have come at odds with each other over some misunderstandings.

Despite always desiring to find a way home to his beloved Mindscape and his people, Sleepwalker takes the time to further study the human world and to right any wrongs he may come across.


Cover Date Appearance Information
Jun 1991 App: Sleepwalker #1
  First appearance of Sleepwalker
Jul 1991 App: Sleepwalker #2
  vs. 8-Ball
Aug 1991 App: Sleepwalker #3
Sep 1991 FB: Sleepwalker #4
Oct 1991 App: Sleepwalker #5
  Meets Spider-Man
Nov 1991 FB: Sleepwalker #6
Dec 1991 App: Sleepwalker #7
Oct 1991 App: Quasar #27
May 1992 App: Spider-Man (Vol. 1) #22
Jan 1992 App: Sleepwalker #8
  vs. Deathlok
Feb 1992 App: Sleepwalker #9
  First Lullaby
Mar 1992 App: Sleepwalker #10
Apr 1992 App: Sleepwalker #11
  vs. Ghost Rider
May 1992 App: Sleepwalker #12
  vs. Nightmare
Jun 1992 App: Sleepwalker #13
Jul 1992 App: Sleepwalker #14
  First Spectra
Aug 1992 App: Sleepwalker #15
Sep 1992 App: Sleepwalker #16
Sep 1992 App: Darkhawk #19
Oct 1992 App: Darkhawk #20
Oct 1992 App: Sleepwalker #17
  With Darkhawk & Spider-Man
Nov 1992 App: Sleepwalker #18
  Infinity War Crossover
Oct 1992 App: Doctor Strange: Sorcerer Supreme #46
  Infinity War Crossover
Dec 1992 App: Sleepwalker #19
  Cut-out mask
Date TBD App: Sleepwalker Holiday Special #1
  Holiday Special
Jul 1993 App: Thor (Vol. 1) #464
  Infinity Crusade Crossover
Nov 1993 App: Web of Spider-Man (Vol. 1) #106
Jan 1993 App: Sleepwalker #20
  Sleepwalker & Rick merge
Feb 1993 App: Sleepwalker #21
  vs. Hobgoblin
Mar 1993 App: Sleepwalker #22
Apr 1993 App: Sleepwalker #23
May 1993 App: Sleepwalker #24
Jun 1993 App: Secret Defenders #4
Jul 1993 App: Secret Defenders #5
Jun 1993 App: Sleepwalker #25
  Sleepwalkers invade Earth
Jul 1993 App: Sleepwalker #26
Aug 1993 App: Sleepwalker #27
Sep 1993 App: Sleepwalker #28
Oct 1993 App: Sleepwalker #29
Nov 1993 App: Sleepwalker #30
  Takes place before #19
Dec 1993 App: Sleepwalker #31
Jan 1994 App: Sleepwalker #32
Feb 1994 App: Sleepwalker #33
Mar 1995 Cameo: Secret Defenders #25
Jul 2005 Cameo: GLA #2
  Refuses to join the GLA
Aug 2005 Cameo: Marvel Team-Up (Vol. 3) #9 (Story 1)
Sep 2005 Cameo: Marvel Team-Up (Vol. 3) #10
Jun 2013 App: Avenging Spider-Man #19

Thanks To

 This profile was completed with information used with permission from the Appendix of Marvel Universe website, mantained by Jeff Christiansen (Snood). If you want to find out about that odd-ball character you've only seen once, or even about that character you haven't ever seen, that's the site you're looking for. An impressive amount of obscure characters await you there!

 The assistance of the Marvel Chronology Project is gratefully acknowledged.

 Some of the above information is extracted from the various versions of the Official Handbook to the Marvel Universe and the more recent Marvel Encyclopaedias.

 In: Characters
 Posted: 2005