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Infobox Player
Overview   Statistics   Match History    

Mrn heartbeat lcs.PNG
Background Information
Name: Sung Moo "Peter" Lim
Country of Birth: South Korea South Korea
Birthday: May 7, 1991 (1991-05-07) (age 26)
Residency: News Label - North America.png North America
Role: Support
Favorite champions:     
Alternate IDs: MRN Heartbeat, k Heartbeat, Heartbit, Heartbeattt
Peak League: DiamondLeague.png Diamond I (NA)
Social Media and Links
Infobox Player Twitch.png
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Team History
Trophy icon small black.png
Dec 2011 - Present
UCSDlogo std.png UC San Diego
Dec 2012 - May 2013
TeamMRNlogo std.png Team MRN
Jun 2013 - Jan 2015
Dignitaslogo std.png Team Dignitas
Jan 2015 - Nov 2015
Dignitaslogo std.png Team Dignitas

Peter "Heartbeat" Lim is a South Korean League of Legends player who was previously a sub for Team Dignitas.


He began his gaming career playing Defense of the Ancients and quickly grew tired of the game. Looking for a new game to play, he stumbled upon League of Legends and enjoyed playing it and has played ever since. He is currently attending UC San Diego in pursuit of an Applied Mathematics degree. Although he started off as an ADC for Team MRN, he switched over to the role of support with Nientonsoh taking over ADC. He has stated that this was because being ADC was too mechanically demanding to both perform well and to be able to call plays for his team.

On January 9th, 2015, Team Dignitas announced that they are searching for new substitution players and that Cruzerthebruzer, Azingy, Flappy Bearfish, and Heartbeat are no longer on the roster.[1]


  • Was on a team with L0CUST and TakashiX early in his League of Legends career.
  • Known for building Leviathan on his AP Carries during tournament play.
  • His English name is Peter.
  • His most played champion in the LCS after switching over to Support is  Lulu.
  • Renowned for reviving  Urgot picks during the NA LCS Qualifiers.
  • Popularized  Tristana picks in the NA LCS.


  • 2012
Date Event Result
2013-06-15 Howie's E-vitational Gold.png Otter Logo std2.png W : FF Logo std2.png prototype19
2012-11-11 Lone Star Clash 2 Copper.png UC San Diego UCSDlogo std.png 0 : 2 UTlogo std.png UT Austin
2012-02-27 CSL LoL REDUX Silver.png UC San Diego UCSDlogo std.png 0 : 2 UCIlogo std.png University of California, Irvine
2012-01-15 Winter Game Fest 2012 Copper.png UC San Diego UCSDlogo std.png 0 : 1 UCIlogo std.png University of California, Irvine



External Links


  1. Announcing the Team Dignitas LCS Sub Try-outs team-dignitas.net