Helper to Hero is one of the sub-games in Kirby Super Star Ultra. It was not in the original. The player gets to play as one of the helpers in the game, including Sword Knight.
If the player beats Helper to Hero with all helpers, they get rewarded with the original Kirby Super Star cutscenes from Spring Breeze, Dyna Blade, The Great Cave Offensive, and Milky Way Wishes. To beat Helper to Hero, the helper has to fight Whispy Woods, "mid boss all stars 1", Kracko, King Dedede, Dyna Blade, Fatty Whale, Chameleo Arm, "mid boss all stars 2", Twin Woods, Computer Virus, Meta Knight, Wham Bam Rock, and finally, Wham Bam Jewel.