Robert is a very kind and dedicated hedgehog. He is very serious when it comes to roles and is very generous. He is a very accurate actor when it comes to roles as well. He also has a stutter which changes when using words with "R" such as "drinking" into "dwinking." He is very soft spoken and tries his best at any role he gets. 

Heres a reference link to get an idea of what he's like https://www.youtube.com/watch?v=R1SiIS4JaZE

You must have discord as well as a decent microphone set up. As for other requirements being capable of singing with the voice and express emotion with the lines if need be. You do not need to be exact,  just recognizable to fit the character.