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Mario Tennis Aces datamine reveals bosses, playable characters

Mario Tennis Aces datamine has potentially detailed bosses, playable characters and courts.

Twitter user Blazingflare claims to have uncovered the following information as part of a datamine of the game’s pre-release demo tournament.

Unannounced playable characters

  • Chain Chomp
  • Diddy Kong
  • Koopa Troopa
  • Para Troopa
  • Shy Guy
  • Kameck
  • Birdo
  • Spike
  • Boom Boom
  • Dry Bones
  • Miis
  • “Hone” (Bone in Japanese)
  • Rosalina
  • Waluigi
  • Potentially two of the following: Spike, Toad, and/or Dry Bones


  • Petey Piranha
  • Gooper Blooper
  • boss_icegolem
  • boss_esterkoopa
  • boss_mirage
  • boss_statuekoopa
  • inishienoudedameshi


  • Stadium
  • Haunted
  • Battleship
  • Bowser’s Castle
  • Snow Mountain
  • Sand
  • Forest

Mario Tennis Aces will host a pre-release tournament between 1-3 June; the demo client is available now to download on Nintendo Switch.

Mario Tennis Aces heads to Switch on 22 June.

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Steve Wright

Steve's the owner of this very site and an active games journalist for the past ten years. He's a Canadian-Australian gay gaming geek, ice hockey player and fan. Husband to Matt and cat dad to Wally and Quinn.