In Babylon 5
, he is Delenn
's mentor and "Old Friend." He visits her on Babylon 5 during the first contact with the Great Machine
on Epsilon 3
. When the caretaker, Varn, dies, Draal takes over.
Draal is one of those recuring characters on B5 who changes actors mid-series, so don't be suprised if you're watching re-runs and the guy who goes into the machine in A Voice in the Wilderness, Part II (Louis Turenne) is different from the guy who comes out in Voices of Authority (John Schuck).