We mostly hear about notorious and very diverse nature of Shri Krishna, personally I have never herd about the nature of Shri Rama in his various phases of life and the amount of knowledge he posses (in case of krishna his wisdom is well propagated as Shrimad Bhagwad Gita). Krishna had a body made out of full sattva and because of that his body never aged beyond 25 years so he was like gods who do not age. What about lord Rama? People also talk about the Thunderous characteristic voice of Shriman Narayanas purna avatars did Rama had such voice and what is the reason of having such deep voice?
Valmiki and Narada talk about SriRama's 16 qualities in the very first shlokas of Ramayana
guna-vaan virya-vaan dharma-gnya kruta-gnya satya-vaakya drida-vrata chaaritrena-yukta sarvabhuteshu-hita vidvaan samartha eka-priya-darshana aatma-vaan jita-krodha dyuti-maan anasuyaka bibhyati-deva
During the many phases of his life, each of these qualities was shown in practice by Maryada Purushottam Ram. You may like to listen to Ramayana upanyasam from satvik gurus to learn when and where he displayed them.
Since both Rama & Krishna are just different avataras of the same MahaVishnu, their physical bodies are shudda-satva.
In kamba Ramayanam, Kambar states that Lord Rama is always quiet, he do not get angry, soft spoken, never hate anybody, respect shown to parents, elders, rishis etc. Of course Lord Rama showed how a human should live by having these qualities. For that only he took that avatar.