The following two profiles have been provided by DMC from Neo Ark Cradle.

Ranze
VA: Kamakura Yuna (Ghost Girl’s VA)
The student council’s vice president. She assists Gakuto with the student council’s duties and enforces discipline at Goha Seventh.

Oomori Menzaburo
VA: Nagumo Daisuke

A fifth grader from Goha Third Elementary School. He’s a ramen lover, and his deck includes cards that have to do with ramen. He dreams of creating new rules that fuse ramen and Dueling together one day.

President Goha/Mr. Goha
The president/CEO of the worldwide mega corp, Goha Corporation, who has expanded into multiple business fields, including one heavily focused on Dueling. He always wears a mask, and none of his staff, even the topmost executives of the company, have ever seen his face.

https://twitter.com/AIR_News01/status/1241215311837159424

An episode clip showing Yuga trying to hack his Duel Disk and failing miserably.