The Guinness World Records has been the world's largest collection of world records for over 50 years. In this year's Guinness World Records Gamer Edition, not one, but two Smash Bros. players have been featured for their achievements!
Klayton dressed as his favorite Smash Bros. character, Sonic
Klayton Schauffer from Washington, USA, holds the Guinness World Record for "Most KO’s (knockouts) on Super Smash Bros. Brawl" with 51 KOs. This record uses the ruleset of 2 minute time matches. His method of achieving this was simple - just go to Flat Zone 2 with Zero Suit Samus, go to the far right blastzone, and repeatedly throw the opponents off stage. A video of his record can be found here.
Ken as his signature character, Marth
Meanwhile, Ken Hoang, very well known as "Ken" or the "King of Smash" in the competitive community, holds the Guinness world record for "Highest-earning Super Smash Bros. Melee player". After inarguably being the best Melee player in the game's early years, Ken has amassed $36,175 in tournament winnings over his career.
Note: Although Ken holds the world record, it seems Armada actually has made the most off of Melee. Source
Check out the video where Klayton and Ken discuss their experiences as Guinness World Record Holders!