Hephaestion (and Bogaos) are 2 of my favorites --as portrayed by Mary Renault--

https://en.wikipedia.org/wiki/Hephaestion

They were the closest to Aleaxander and the most sensitive--as narrators--in Mary Renault's novels.

Hephaestion is portrayed by 2 different actors in the Indian TV series--Porus.

Alexander suffered a full-scale mental breakdown after Hephaestion died suddenly--of typhoid fever, Renault suggests.

Alexander lay over the corpse for days and had to be dragged away.