Super Fighting Robot: Mega Man (fan animatic series)
Charles Collings for Dr. Thomas Light
Generally speaking, this depiction of Dr. Light is an almost exact mirror of his depiction in the Ruby Spears cartoon, so the easiest way to please me is to just try to emulate his voice in that. But to be a bit more broad… This is a Dr. Light that’s roughly 50 years old, and is broadly seen as a wise, old man. It should also be clear that some of that wisdom comes from poor judgement in the past. On that note, another character you could model the voice after is Uncle Iroh from Avatar.
But also don’t forget that, like Mega Man, he’s a bit of a dork. He may even have mild Aspergers. He has a tendency to go off on bizarre tangents and get lost in his thoughts, often spacing out or is simply just standing there processing.
UPDATE: Another voice I could see working is a variation on the "stereotypical wizard voice" trope. For instance, something like Deckard Cain from the Diablo series: https://www.youtube.com/watch?v=-JlbOYyl2QY
Confident:
”Don’t worry about that, admiral. I’m sure you’ll find my boy is more than capable of keeping the situation under control."
”I’ve worked in robotics for all of my adult life! A few circuits shouldn’t be too much of a challenge to puzzle out.”
Professional:
”Behind me is my latest set of robot masters, which in the coming weeks I will begin leasing out to trusted organizations.”
”I do appreciate you reaching out to me, however please remember that I’m more of a scientist than a businessman. I can give you the card to my friend and associate so you can work out the details with him.”
Serious:
”I don’t believe in mass-producing robots as weapons, as I feel war is already needless and barbaric. I make an exception for robots like Mega Man, because they stand to fight for protecting the innocent and retaining future peace. A factory soldier stands only for the faceless condonement of violence.”