She confuses him.
To many, Ziggs lacks much of the common sense required to be sane. And for the most part, they would be correct. Thoughts run in a constant stream through his mind, many of them making their way out of his mouth in a constant muttering that never seems to stop. The whole world is filled with things that don't make sense; and that's okay with him. He doesn't need to make sense of anything. He just likes to make bombs. If it's not needed for survival or bomb making, it's pointless to try and figure out.
And yet, she confuses him. Her elevated position in Valoran, her need for the calm and controlled, and her constant attempts to keep him in line confuse the small yordle, as well as amuse him. After all, he is the hexplosive's expert; the very essence of explosions is the inability to control or contain them. She rules with an iron hand and a velvet fist; fair judgments, for the most part, but strictly enforced. Sometimes he wonders if she's as crazy as him. He doubts it.
Deep in the recesses of Ziggs mind, however, he knows several somber facts. There will never be order in the universe, or even in Valoran. For every evil contained, another rises. For every good deed done, several evil acts are committed. Sometimes the good will outnumber the bad, sometimes the opposite. Things are never in balance or control; things are in chaos. And you can't control chaos; that doesn't even make sense. You cannot explain everything in the known universe; some things are beyond explanation or reason. Those who accept this fact can move forward, content in the knowledge that they won't know everything. There rest will slowly lose their sanity. Like Kayle.
But that's all too deep for him to contemplate for long. After all, he still needs to finish the reaction sequence for this bomb. Perhaps if he raised the amount of oxidizer, the reaction would become more volatile and he could get a bigger boom. Now, where did that bomb go…?
Ziggs is carefree and aloof. He doesn't care for what cannot be explained; only bombs. If it's confusing, it's not worth thinking about.
She confuses him.
He frustrates her.
Kayle looks across the land of Valoran with a steady, hard gaze. In her mind, she holds the scales of everyone's life in balance; weighing them, judging them. She is unbiased and unfazed, the savior to the people of this world. She is always peace and fair.
And yet, he manages to frustrate her. The small yordle is constantly finding new ways to take the balance of peace in the land and somehow disrupt it. With his bombs always at the ready, he seems to take no account for the safety or peace of anyone else around. Countless times, Kayle has attempted to talk to Ziggs, explain to him that what he does is harmful and must stop. But holding a conversation with the little hexplosive expert is an impossible task if one isn't discussing bombs or explosions. His passion is chaos, and he will not be denied. When she attempted to use force, she was met with the realization of how powerful the seemingly crazy one can be.
Kayle can hold her patience against many. She has dealt with the most unreasonable and the most unruly of the champions of the league, and managed to keep a steady head. Even when confronting Morgana, she manages to stay civil and calm despite her sister's persona. Never before had she lost her temper. That changed when Ziggs managed to push her too far. She had tried to talk down the yordle from testing yet another bomb (on himself, for that matter). His responses were distracted and dismissive as he travelled from place to place, looking for somewhere to create the least amount of collateral damage (something she had at least managed to talk him into in years earlier). Finally, Kayle had had enough. Drawing her sword, she threatened the small yordle and commanded him not to go any further.
The crazed look Ziggs normally wore disappeared, replaced with a sharp, calculating stare as he stopped muttering to himself and turned to face Kayle. His smile had diminished some, going from the toothy grin of an insane person to the subtle smirk of intelligence.
"Stop me," he casually remarked. Kayle flew forward, anger finally clouding her judgment as she raised her sword. The next few moments were a blur, as she found herself having to deflect a number of bombs being thrown in her direction with surprising accuracy. Despite her best efforts, she was driven back, with every direction she turned blocked by an explosive of some kind or another. Before long, her ears were ringing, and she could barely see around the stinging smoke in her eyes.
When the air finally cleared, she found herself sitting on the ground with Ziggs standing a few feet away.
"There isn't always order. There's never order. You can't control everything; you can't know everything. The world is chaos. Those who accept that can move forward. Those who cannot will drive themselves to insanity. Like you," he said, tilting his head slightly. He held her gaze for a moment longer, and then the crazed smile and look returned to his eyes. Twitching and glancing around, she could hear him muttering to himself once more. "Now where did that bomb go…?"
As he wondered off, Kayle stared after him, righteous indignation welling up inside of her. He was wrong; he had to be wrong. There would be order, and there would be an end to chaos. Everything had an explanation; if you didn't know it, then you hadn't found it yet. She would create peace, and order, and she would do it by the edge of the sword. Because he was wrong. He had to be wrong. She, Kayle, the savior of her people, of all of Valoran, would create the order and justice that was meant to be.
Kayle represents justice and order. She is of sound mind and spirit. She will not be brought down; she will bear the world on her shoulders until she can right the wrongs eternally. She is not subject to trivial feelings or problems.
He frustrates her.