Eobard Thawne/Reserve Flash (Arrowverse) can use his super speed to create after-imaged copies of himself to appear in two places at once, by bouncing back and forth so fast that the human mind can't perceive the difference.
Way of Onmitsu, 3rd of the Shihō: Utsusemi (Bleach) utilizes Shunpo's high speed to leave behind an afterimage that appears to have taken damage.
Suì-Fēng (Bleach) is able to create at least 15 clones of herself at once using Shunpo.
Master Muten Rōshi/Jackie Chun (Dragon Ball) using the Afterimage Strike to create multiple speed clones to attack Tenshinhan in eight directions.
Spider-Man 2099 (Spider-Man:Shattered Dimensions) using Accelerated Decoy to create speed clones, either for distraction or attack.
Jean Pierre Polnareff's Stand, Silver Chariot (JoJo's Bizarre Adventure Part III: Stardust Crusaders) speed is so great that it can create up to eight copies of itself as it moves between all these different positions simultaneously.
Ragar Kertia (Noblesse), as all leaders of the Kertia Clan, specializes in speed attacks.
Lyndis (Fire Emblem) creates speed clones to attack.
Shisui Uchiha (Naruto)
Sonic the Hedgehog (Sonic the Hedgehog Movie)
Speed O' Sound Sonic (One-Punch Man) using his Tenfold Funreal technique during his rematch with Saitama.