Not every Riot champion design resonates with players, even when they're very strong.
Throughout the history of League of Legends, many champions have been created, with some undergoing reworks every year. These champions possess varying strengths and skill sets. Additionally, Riot always adjusts their power levels to fit the meta and community feedback.

However, there are still champions that make League of Legends players 'cry out'. Not because these champions are too strong, but because they are illogical designs from Riot. In a recent survey titled 'Who are the worst-designed champions ever created by Riot?', the community identified three champions that must be included in the list: Yuumi, K'Sante, and Zeri.

Yuumi
When mentioning Yuumi, many immediately think of the cat-shaped champion primarily played in the Support position. Fundamentally, Yuumi's skill set isn't overwhelmingly powerful, featuring only crowd control, healing, slowing abilities, and increased movement speed for the champion she attaches to. However, it's precisely the attachment mechanic that frustrates many. Most players pick Yuumi with the sole purpose of being... afk.

In many situations, Yuumi not only fails to assist teammates but also puts the team in a 4v5 or 1v2 scenario. However, Yuumi remains a contentious champion as many gamers believe she's balanced, with the issue lying solely with the players.
Zeri
Often paired with Yuumi is Zeri, forming the 'destroyer' bot duo, the most haunting in the League of Legends community. Zeri's strengths include extreme mobility, direct power scaling in combat, and incredible late-game pulling power. Furthermore, Zeri holds the record for the most frequent adjustments by Riot, receiving 12 changes in just 6 months.

It can be said that Zeri is truly overpowered in the Bottom Lane. Particularly, she can synergize with almost every Support champion. Hence, Zeri consistently appears in matches, even in professional play, either as a first pick or first ban.
K'Sante
Speaking of K'Sante currently, many gamers might recall ShowMaker's timeless phrase. Clearly, K'Sante was born a Fighter, yet he possesses everything a perfect League of Legends champion can have: damage, durability, mobility, magic power, physical prowess, and crowd control. In short, K'Sante is the most comprehensive champion in League of Legends currently, yet also deemed one of Riot's poorly evaluated designs.

Especially, K'Sante's ultimate ability transforms this champion from a Fighter into an Assassin with astonishing damage and crowd control abilities. Therefore, many players admit: 'When playing K'Sante, I feel this champion has no weaknesses.' K'Sante himself has been a highly contested ban since his release.