Persian

Persian carves out a niche in RBY OU thanks to its ability to consistently land critical hits with Slash. Slash bypasses Reflect, allowing it to break through Reflect Snorlax. Its solid special coverage ensures that it's only fully walled by Gengar and is able to handle potential answers to Normal-types, such as Rhydon and Cloyster. Persian’s impressive Speed allows it to outspeed Tauros and tie with Starmie, making it an effective revenge killer. It also grants Persian a strong 22.46% critical hit rate. Tauros and Persian form a devastating offensive duo that's tough to handle, as absorbing their combined damage becomes a significant challenge.

Despite its offensive potential, Persian is not a replacement for the rampaging bull, Tauros, which partly explains why it has never achieved true OU prominence. Persian is significantly less bulky, often getting 2HKOed by many attacks that Tauros can typically survive. Due to this weakness, Persian is often forced out by Thunder Wave users, such as Alakazam and Starmie. This lack of defensive utility is a key weakness, as Persian cannot afford to switch into any attacks, making it hard to get onto the field safely. Furthermore, since Persian is almost always paired with Tauros, this creates a team with two Pokemon that do not want to take hits, leading to a lack of space for defensive tools.

Finally, although Slash is a strong move and always lands a critical hit by design, this means Persian's damage output with Slash is capped. In contrast, Tauros can deal nearly as much damage with Body Slam, but also has the potential to score critical hits and inflict paralysis, giving it higher overall potential in terms of both damage and utility. Persian demands sharp prediction and aggressive play to make the most of its strengths, but when used effectively, it can be very rewarding, particularly against more defensive strategies.