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Erik Broes

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Erik Broes
Real name

Erik Broes

Date of birth

December 2[1]


Game developer




English, Dutch[2]

Known for


Reddit name


Twitter name


GitHub profile


Bug tracker profile


Minecraft name

[3].1 Grumm[3]

Erik 'Grum' Broes is a game developer at Mojang Studios. He was originally hired to develop the official modding API and maintain the Minecraft server. In August 2012, his duties were broadened, to include general game development.

Broes has been actively involved with the Minecraft community, and has joined with many prominent Minecraft figures, such as appearing in SethBling's channel on YouTube,[4] a popular and well-known channel regarding Minecraft.

Broes was also previously an admin on the Dutch TweakCraft server.[5][6] While not active in-game, he was mostly active on the server's IRC channel and mainly worked on the server's plugins and coding.[citation needed]


  • Grumm, ingame, has been hidden in most of the "cover pictures" of snapshots starting with Java Edition 13w19a.
  • Starting in Minecraft 1.6, any mob named "Grumm" or "Dinnerbone" or the players themselves will be rendered upside-down.
An example of an upside down mob by renaming its egg "Grumm."