Notes:

Botrick is the one that looks like Iwata, having the same glasses and hairstyle. He expresses interest in the Lord of the Mountain, who lives on Mt. _Sator_i and is said to be a reincarnation of a wise sage who lost his life under unfortunate circumstances. Coincidence? I think not.

Dayto is the guy who resembles Robin Williams, having similar facial features. It's not as obvious as Iwata, nor does he have any connections to a special sidequest. He's just a watchman who hangs around one of the stables to give the player some directions.

Even though it's not part of the image, I suppose I should note that Robbie the Sheikah scientist has a similar name and hammy attitude similar to Williams, even though in terms of appearance he doesn't look much like him.

It's nice that the game pays tribute to these two even though it's only through non major NPCs.