This is Rudolf Aleph Waybright, he's member number 89 and by far the most elusive of the entire team, his background, address, school, anything personal is either classified or unknown. All that is known about him is he is one of the strongest Storm Riders ever and that nobody knows what his "Imperial" road actually does.
Rudolf is actually closely associated with Indigo's father Isanji, unknown as to what relationship they have he is morbidly terrified of Isanji and anyone related to him. Rudolf is a renown reclusive person and in truth he's just hiding from Isanji and doesn't want to be found, claiming "Rabbit's are his favorite...". The Imperial road is actually one move and that's his Infinity Atmosphere, to put it simple...the move is a technique that ensures absolute dominance over his opponent in speed, strength, and agility. The only time it was used it he sunk and aircraft carrier (on accident). Coincidentally, Rudolf has only fought once.