This reaction not only surprised the games' director, Shigeru Ohmori, but caused Tumblr to change its year end examination of discussed subjects to now account for Pokémon.

[6] Standing 2 ft (60 cm) tall and classified as a "Normal" type species, Wooloo appears as a short, round sheep with white wool, and has a dark brown face with matching hooves.

While Hop gushes over his brother's dragon-like Charizard Pokémon, his Wooloo gets jealous and tries to imitate its fire breath and flight and fails quickly at both.

[28] Hirun Cryer of VG247 noted that while it was one of the first Pokémon seen in the games, "it's a testament to Wooloo's loveable design that we're still infatuated with it even after having seen tons of other new creatures", attributing some of the appeal to how it moved by rolling instead of walking.

[29] Nadine Manske of Dot eSports stated similar sentiments, further adding that in comparison to previous titles in the franchise, "being met with a herd of fluffy sheep is a memorable way of starting off the generation eight games.

"[30] Patricia Hernandez in an article for Polygon stated that while she recognized the species' popularity, it wasn't until the Twilight Wings episode that she felt the same appeal, feeling it humanized Wooloo while drawing comparisons to fellow Pokémon Mimikyu's characterization.

[21] And while Tim Rogers of Kotaku acknowledged that people criticizing Wooloo as "literally just a sheep" were correct, he argued their recognizability served as an example of the strengths of character design in the Pokémon franchise.

[31] Examining their design and the reasons behind their popularity, Michael McWhertor of Polygon described Wooloo as "perfect in every way", attributing their appeal in part to their round shape but also their innate friendliness, two aspects he noted that people would naturally enjoy.

[32] In contrast, Hannah Collins of Comic Book Resources argued that Wooloo's depiction, more specifically that in Twilight Wings, helped illustrate the issue with player perception towards Normal-type Pokémon in the context of the games: while some were loved for how they appeared, the typing was often seen as unremarkable and overshadowed by the implications and appeal of the others.

[33] Discussing newer Pokémon in comparison to earlier generations, Fanbyte's Dylan Bishop argued that some like Wooloo were designed with a different goal in mind, intended to connect to players on an emotional level.

He concluded by stating that designs like Wooloo's were a sign future games would provide further multilayered partners, "true Pokémon friends, resonant of our actual emotions, that Trainers worldwide will fall in love with".