Lenora's Herdier (anime)

Lenora's Herdier first appeared in BW015 as a Lillipup. Herdier was the first Pokémon Lenora used in her rematch against Ash. Following on from its strengths at its base form, it has powerful attacks including a more powerful Shadow Ball, but also knows a stronger Roar and has Protect which protected it from damage and an insanely powerful Giga Impact attack. It was eventually defeated by Ash's Tepig's Flame Charge attack.

As a Lillipup
Lenora's Lillipup debuted in The Battle According to Lenora!, where it battled Ash's Tepig. When it was first sent out, both Iris and Ash thought it was useless and weak due to its cuteness. However, it was shown to be fierce in battle, to Surprise Iris. In its battle with Ash, it used Roar to send Tepig back, forcing Oshawott to come out. It was then called back to its Poké Ball. Later it was sent back out when Watchog defeated Oshawott. It was able to easily beat Ash's Tepig with a powerful Take Down, causing Ash to lose the battle to Lenora. Later it evolved in the rematch.