Arashiro Utsusami (The Ultimate Artist) or the Head Mistress of Team DR is Tall due to her never stopping growing she runs the Entire Team DR with her Staff, She's a Kind Soul managing to Bring back The Ones that Monokuma Killed yet when it came to it she had to improvise and put everyone in new Bodies that Can help them. She Runs The Womanly Director Look pretty well and shes trustworthy
And yes she is an ultimate Teacher Herself "Professor Song" who is actually Supportive of People