The video, which circulated widely on social media, featured a lookalike calling on Tinubu to step down, citing worsening hunger and the rising cost of petrol and essential goods.
Many viewers initially believed the speaker was Dokubo, given his strong resemblance and known support for the president.
However, Dokubo has dismissed the claim, clarifying in a separate video that the individual is actually his brother, not him.
He explained that the man, identified as Theophilus, is from Bayelsa State, while he himself is from Rivers State, though they share a close familial bond.
Dokubo added that those insisting he appeared in the video are critics trying to misrepresent him.
Reaffirming his stance, he maintained that Tinubu remains his ally and should be allowed to complete his tenure.