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06:39, 29 January 2013 ==Erroneous Cards==
Erroneous Cards are cards that have a typographical or human error that were made prior to the printing process. Some of these cards do not have a proper version.
{| class="wikitable sortable"
|-
! Card Name !! Description of error !! Erroneous Card !! Proper Card
|-
| Azrael || Missing "AZRAEL TM & © 1996 DC Comics. All Rights Reserved." on the card. || http://overpower.ca/cards/characters/12b.png || http://overpower.ca/cards/characters/12.png
|-
| The Hellfire Club's Sebastian Shaw || Missing ™ for Sebastian Shaw. Also erroneously states Sebastian Shaw as the Character who draws a card. || http://overpower.ca/cards/specials/565b.png || http://overpower.ca/cards/specials/565.png
|-
| The Hellfire Club's Tessa || Miscoded as AA. || http://overpower.ca/cards/specials/567b.png || http://overpower.ca/cards/specials/567.png
|-
| Longshot's Roll With The Punches || Not really an error, just two versions exist and none are erroneous. || http://overpower.ca/cards/specials/763b.png || http://overpower.ca/cards/specials/763.png
|-
| Scarlet Witch's Sorceress Slam || Card depicts a Fighting Icon for a Strength attack. || http://overpower.ca/cards/specials/1187b.png || http://overpower.ca/cards/specials/1187.png
|-
| The Shi'ar's Lilandra || Misspelled Shi'ar (Sh'iar) on card. || http://overpower.ca/cards/specials/1253b.png || http://overpower.ca/cards/specials/1253.png
|-
| Marvel Manhattan || Misspelled Manhattan (Manhatten) || http://overpower.ca/cards/homebases/24.png ||
|-
|}
==Odd Cards==
Odd Cards are cards that have noticeable defects produced during the printing process and there exists at least two cards with the same defect.
{| class="wikitable sortable"
|-
! Card Name !! Description of defect !! Defective Card !! Non-defective Card
|-
| Super Patriot || Pink dots to the left of Super Patriot's face. || http://overpower.ca/cards/characters/296b.png || http://overpower.ca/cards/characters/296.png
|-
| Doubleshot (6E 6S/F) || Yellow blobs on the border, covering the words "TACTIC" and "DOUBLE SHOT". || http://overpower.ca/cards/doubleshot/10b.png || http://overpower.ca/cards/doubleshot/10.png
|-
| Backlash's Psi-Whips || Black spot, underneath the comma in the first line. || http://overpower.ca/cards/specials/96b.png || http://overpower.ca/cards/specials/96.png
|-
| Beast's Brilliant Deduction || Pink spot on card, size and location vary || http://overpower.ca/cards/specials/131b.png || http://overpower.ca/cards/specials/131.png
|-
| Black Panther's Jungle Savvy || Yellow blob around the center of the image. || http://overpower.ca/cards/specials/161b.png || http://overpower.ca/cards/specials/161.png
|-
| Bullseye's Precision Shot || Yellow blob around the entire image. || http://overpower.ca/cards/specials/212b.png || http://overpower.ca/cards/specials/212.png
|-
| Grifter's Bull's-Eye Shot || Moire-less background, found in Booster Packs, is the "defective card". The "non-defective" card is found in Starter Decks. || http://overpower.ca/cards/specials/515b.png || http://overpower.ca/cards/specials/515.png
|-
| Henry Pym's Yellowjacket || Pink streak across the low-left of the image. || http://overpower.ca/cards/specials/577b.png || http://overpower.ca/cards/specials/577.png
|-
| Ka-Zar's Jungle Savvy || Yellow spots to the left of Ka-Zar's face. || http://overpower.ca/cards/specials/700b.png || http://overpower.ca/cards/specials/700.png
|-
| Kingpin's Crime Magnate || ''??'' || || http://overpower.ca/cards/specials/721.png
|-
| Magneto's Magnetic Devastation || ''??'' || || http://overpower.ca/cards/specials/772.png
|-
| Marrow's Bone Snap || Yellow spots in the top-right section of the image. || http://overpower.ca/cards/specials/802b.png || http://overpower.ca/cards/specials/802.png
|-
| Mr. Sinister's Power Scheme || Blacks look faded out. || http://overpower.ca/cards/specials/894b.png || http://overpower.ca/cards/specials/894.png
|-
| Namor's Atlantis Attacks || Blacks look faded out. || http://overpower.ca/cards/specials/918b.png || http://overpower.ca/cards/specials/918.png
|-
| Psycho-Man's Fear || Pink dot on the border. || http://overpower.ca/cards/specials/1046b.png || http://overpower.ca/cards/specials/1046.png
|-
| Spawn's Finite Power || Incorrect cut, one card is smaller than all other OverPower cards. || http://overpower.ca/cards/specials/1276b.png || http://overpower.ca/cards/specials/1276.png
|-
| Spider-Man's Science Whiz || ''??'' || || http://overpower.ca/cards/specials/1291.png
|-
| Thunderbolts' Techno || ''??'' || || http://overpower.ca/cards/specials/1420.png
|-
| Super Skrull's Immitation || ''??'' || || http://overpower.ca/cards/specials/1358.png
|-
| Zealot's Warrior Soul || Moire-less background, found in Booster Packs, is the "defective card". The "non-defective" card is found in Starter Decks. || http://overpower.ca/cards/specials/1550b.png || http://overpower.ca/cards/specials/1550.png
|}