Steadfast Presence (W) does not stop Alpha Strike (Q) or Highlander (R). Instead, Poppy's armor and Iron Ambassador (P) shield absorb basic-attack damage, while Heroic Charge (E)'s wall stun or Keeper's Verdict (R) can interrupt Yi after Alpha Strike ends.

Poppy's Steadfast Presence (W) shuts down Lee Sin's Resonating Strike (Q) dash and Safeguard (W) ward-hop to kill his mobility, and against a wall she stuns him with Heroic Charge (E) to overpower him tankily.

Steadfast Presence (W) does not stop Living Shadow (W)'s position swap. Instead, Poppy's armor reduces Zed's physical damage, and predicting where Death Mark (R) places him lets Heroic Charge (E)'s wall stun or Keeper's Verdict (R) interrupt his follow-up.

Poppy's Steadfast Presence (W) shuts down Camille's Hookshot (E) dash, her main engage and disengage, neutralizing her mobility, while Poppy's tankiness rides out Camille's damage window.

Poppy's Steadfast Presence (W) blocks Kha'Zix's Leap (E) to cut off his engage and escape, and unlike the squishy Kha'Zix her high armor lets her win the early duel.

Mundo melts Poppy with the max-health-scaling sustained damage of Infected Bonesaw (Q) and Heart Zapper (W), backed by Goes Where He Pleases (P) regen and Maximum Dosage (R) healing, and Poppy can't break through his tankiness and sustain, so she loses the long fight.

Olaf's Ragnarok (R) ignores all CC, so Poppy's Steadfast Presence (W) slow and Heroic Charge (E) stun become useless, and his Reckless Swing (E) true damage overwhelms her in the duel.

Warwick dominates extended duels with Eternal Hunger (P) bonus damage, Jaws of the Beast (Q) lifesteal, and the Infinite Duress (R) suppress, and Poppy's armor can't out-value Warwick's constant healing.