Mini P.E.K.K.A.

Summary
This card is unlockable from the Training Camp (Tutorial). The Mini P.E.K.K.A. wears grey, metal armor, wielding a huge sword. Its horns are bright blue, along with its visor. Unlike P.E.K.K.A.'s slow moving speed, it moves much faster than P.E.K.K.A

Strategy
The Mini P.E.K.K.A can be used to take down Buildings quickly, if not already being attacked. Can be used in affiliation with high hit-point troops, such as the Giant, so they take the damage while the Mini P.E.K.K.A. deals damage. It's weak against a swarming amount of lower hit-point units, like Skeletons, or Goblins. Defensively, the Mini P.E.K.K.A can be used to rebuff enemy troops that target the player's Building (e.g, Giant, Hog Rider)

Trivia
On 9/2/16, the Chest Rewards & Card Balance Update increased the Mini P.E.K.K.A.'s hitpoints by 3%.

Hog Rider

Summary
This card is unlockable from the P.E.K.K.A Playhouse (Arena 4). The Hog Rider is a powerful unit that targets Buildings (and Crown Towers), and with its innate ability to leap over obstacles, can ensure victory and a Crown.

Strategy
With his high amount of damage, the Hog Rider can be spawned in affiliation with a high hitpoint card, such as the Giant, with support units to distract enemy troops. The Hog Rider, in conjunction with the Freeze spell can be used to extreme effectiveness. Firstly, the Hog Rider is spawned, and if the opponent spawns troops to defend the Tower, cast the Freeze spell, as the Freeze spell freezes the defending troops & Crown Tower, and the Hog Rider will remain unhindered to attack the enemy's Tower. The Hog Rider only attacks Buildings. This means that it can easily be distracted with a Tombstone or a Goblin Hut, but he can also help you by destroying them.

Trivia
The Hog Rider is the only ground card that possesses the ability to jump across the separating area in the middle of the Arena. Its description is based on the Clash of Clans commercial, Ride of the Hog Riders. When it is deployed, it yells "Hog Rider!" similar to the one that appears in the commercial. Previously, the Hog Rider used to share the same attacking sound as the Barbarians.

Valkyrie

Summary
This card is unlockable from the Goblin Stadium (Arena 1). The Valkyrie bears orange hair, a War Axe and a brown fur coat and attacks with a powerful whirl of her axe, damaging all the troops in an AoE (Area of Effect) surrounding her.

Strategy
The Valkyrie is very effective against the Skeleton Army, and other low hitpoint troops surrounding her.

Trivia
On 9/2/16, the Chest Rewards & Card Balance Update increased her attack speed to 1.5 sec (from 1.6 sec). The Valkyrie is very similiar to her Clash of Clans counterpart (with her spinning War Axe, aesthetics, etc) except for the Clash Royale-styled graphics and the different colors for both sides (Red, Blue).