Zelda (SSBM)/Forward aerial
Zelda's Lightning Kick has a unique animation that sharply raises her ECB, then drops it slightly immediately following. Using this to land on a platform is referred to as an aerial interrupt (AI). Timing this aerial interrupt can land Zelda, autocancel for 4 frames, and leave Zelda actionable on platform. This is likely the fastest way to land and be actionable on a side platform on all stages. The aerial interrupt is also one of the strongest, albeit hardest, ledge options Zelda has available to her, granting 7 frames of invulnerable actionability from ledge on a stage with flat walls, 10 frames on Yoshi's Story, or 13 frames on Battlefield.