When you reach level 120 with 99.99% EXP as a Master, you will be able to become a Hero. Although your level is replaced with the word HERO, in the hiscores and in parties or Guilds your level will read 121-H. Upon becoming a hero, you will receive the Hero skill for your class. Heroes can level up to a maximum level of 129. Instead of the Master M ne, you will have a large H in a yellow box opposite where a Guild logo would be.