Collector Yumi:
He was overshadowed by Master Toma, the teleportation scientist. Master Chaos' work was brilliant in its way, but merely built upon the work others had done; Master Toma's work was a real breakthrough. Toma developed the theory behind the instant teleportation device.
Nobody else understood Toma's theory, although the results were undeniable. They only knew that the process of teleportation consumed a great many Starstones. Master Chaos was jealous of Toma for stealing the limelight, and dedicated himself to understanding Toma's work in order to surpass it.
Keep listening.