82 - [an additive to an earlier one by Zoria] There was actually a Mushroom King in the Super Mario comics by Valiant Comics in the early 90s and featured characters from every Mario game from Super Mario Bros to Mario 3.
83 - Some characters included Wart, Shy Guys, and a few otehr Mario 2 enemies as well as the Koopalings from Mario 3.
84 - Aside from the Mushrrom King as an original character, there was also a mushroom retainer named Booster who was a butler of sorts and in one issue where he felt he was not needed, he left the ccastle only to be kidnapped by Bowser. The Mushrrom King (who at the time and at other times was going through one of his highly egotisitcal mood swings) believed Booster turned traitor until Mario and Toad went to rescue him and prove the King wrong. After fighting through an army of of Bowser's minions, they get into his castle only to find that Booster had feed them so much junk food they all went into hibernation (because RAISINS) and had been waiting for a rescue.