Aqui, the Puzzle Jester is a custom champion.
It is a tribute to Aqui, the tiny red devil from the Devil Dice series. I've always been rooting for characters with an incredibly deceiving strength, and those bearing very complex kits.
Aqui falls into both categories: a frail (and adorable) mage with tons of utility through an extremely challenging gameplay, whose burst relies on the perfect positioning of every conjured "Dice" when they trigger the passive component of its ultimate. This way, Aqui could potentially inflict huge damage to all enemies inside its area of effect. As broken as it may sound, it takes much time and precision to set up its nukes: this makes Aqui a premium objective-oriented fighter, strategically similar to Heimerdinger, yet very reminiscent of Syndra for its Dice manipulation and mana toll.