The Story of Ziggs
Ziggs is a yordle with an extraordinary gift for explosives — not just technical knowledge of how to make things explode, but an intuitive relationship with the chemistry and physics of detonation that produces innovations nobody else would think of. He applies this gift with enthusiasm, and the enthusiasm is the part that creates problems. He is not careless exactly; he understands what his bombs do. He is simply very interested in seeing what they do, and this interest sometimes crowds out the question of whether they should do it here.
He worked briefly with Heimerdinger and the Piltover academic establishment, which gave him resources and a workshop and colleagues who were doing genuinely interesting work. He also destroyed significant portions of the facilities in the course of his research, which was energetically interesting to him and less so to the colleagues who were in them at the time. His relationship with institutional research is accordingly complicated. He learns faster than the institutions can process him.
He attaches himself to conflicts where his skills are useful — particularly where fortifications need to not be fortifications anymore, or where the problem is essentially architectural and can be solved with enough explosive payload — and does excellent work, often while being very excited about it. His weapons are joyful in a way that is somehow more unsettling than solemnity would be. He loves what he does. What he does destroys things. These two facts coexist in Ziggs without apparent tension.