EX Gotenks has a hairstyle similar to his fusion dance counterpart, though the hair colors are inverted and he has two bangs that hang down instead of Gotenks' widow's peak. Due to Goten and Trunks' hair colors being inverted, EX Gotenks' eyebrows are not black like Gotenks' and have Trunks' hair color instead. Like all EX-Fusions, his clothing is a fusion of Goten and Trunks' clothing instead of the Metamoran clothing worn by his counterpart. He also wears a single Metamo-Ring (created from Goten and Trunks' Metamo-Rings fusing) on his left arm which allows him to remain fused as long as he wears it.
EX Gotenks is the result of Goten and Trunks performing EX-Fusion, which involves them both wearing Metamo-Rings and then performing the Fusion Dance, resulting in EX Gotenks.
As an EX-Fusion, EX Gotenks is weaker than his Fusion Dance counterpart, but has the advantage of being able to remain fused as long as he wears his Metamo-Ring and can defuse at will by removing it.