Hero cards (Heroes) in Clash Royale are unlocked by reaching the right arena and then collecting Hero Fragments from Hero Boxes, chests, events, and Pass Royale until you have enough to “summon” a Hero card. Once unlocked, you equip the Hero in a special Hero slot in your deck and can then use its active ability in battle.

What hero cards are

  • Hero cards are upgraded versions of familiar troops (like Mini P.E.K.K.A or Knight) with a unique active ability you trigger during battle.
  • They have a special golden-style border and use a Hero slot in your deck rather than a normal card slot.

Basic requirements to get heroes

  • First goal is to reach at least Arena 15, because below that you mainly get Wild Shards instead of real Hero Fragments from progression rewards.
  • At Arena 15, your first Hero slot unlocks and Hero Boxes and other rewards start giving Hero Fragments you can turn into a full Hero card.

How to get Hero Fragments

  • Open Hero Boxes whenever possible: these are the main, most consistent source of Hero Fragments, and higher arenas give better fragment amounts per box.
  • Play events, challenges, and seasonal missions, plus progress along the Pass Royale track, all of which can include Hero Boxes or direct Hero Fragment rewards.
  • Certain premium or “lucky” chests and special shop bundles during events can also contain Hero Fragments, speeding things up if you spend gems or money.

Summoning your first hero card

  • You must collect 200 Hero Fragments to summon one full Hero card; when you hit 200, the game shows a “Summon a Hero” prompt in your collection.
  • When you summon using fragments, the Hero you get is usually random, so you cannot always pick the exact Hero unless you use specific shop offers.

Faster and paid methods

  • Time-limited events like “Heroic Holidays” have shop offers where you can directly buy a specific Hero card instead of relying on random fragments.
  • Event bundles and Pass Royale premium tracks may include extra Hero Boxes, fragment boosts, or direct Hero copies, which massively speed up unlocks for active or paying players.

Equipping and using hero cards

  • After summoning, go to your deck builder and drag the Hero card into the yellow-bordered Hero slot, which becomes available at Arena 15 and later expands with more slots at higher arenas.
  • In battle, you deploy the Hero like a normal troop, then tap its ability button once you have enough extra elixir to activate its special power.

TL;DR: Push to Arena 15, unlock the Hero slot, farm 200 Hero Fragments from Hero Boxes, events, chests, and Pass Royale to summon a Hero, then equip it in the Hero slot; for a specific Hero faster, watch for direct shop/event offers.

Information gathered from public forums or data available on the internet and portrayed here.