3D Modeling Question

So this maybe more directed towards a Rioter, but any information would be of help. I'm curious on the workflow/pipeline that is done for making one of the champions in League of Legends. Like which programs are used and the general step by step process that helps with getting your models ready quickly and with the least amount of hiccups to prevent from back tracking too much?

I also would like to know if I can get a better idea on how you'd do the retopology, and the difference you'd do for making it game ready or video animation ready?

Hope to get some replies and thanks for reading.