Can’t stop thinking about how Heimerdinger and Corin/Singed knew each other. How Heimerdinger was possibly responsible or approved Singed being exiled from Piltover , we all know how strict about unconventional and unethical experiments Heimerdinger was initially. So Heimerdinger was possibly glad that Corin’s crazy ideas won’t poison the young minds of Piltover students.
Only for Heimerdinger later to get a new protege and assistant Viktor. Viktor who unknowingly to Heimerdinger was first a student and protege of Singed. Singed probably taught young Viktor some stuff that only an older Piltovian scholar would have known. And later Viktor grew up and impressed Heimerdinger with the knowledge he gained from Singed. And later in canon Viktor still resorts to asking Singed for help and starts doing unethical dangerous experiments on himself, something Heimerdinger would have disapproved of, but Corin would approve and encourage it.
I am saying it is so ironic Heimerdinger and Piltover kicked Singed out, only for Heimerdinger to later unknowingly let in and encourage Singed’s own protege that ends up doing similar crazy shit to what Singed did in his youth. These are mostly headcanon thoughts ofc.
But I wish this was more development or we got a Heimerdinger-Singed interaction and Singed casually asking “BTW how is my kid Viktor doing” and Heimerdinger being so confused