The sound comes from Zyuden Sentai Kyoryuger, the 2013 Japanese Super Sentai series produced by Toei. Rangers load a Zyudenchi battery into the Gaburevolver, shout Brave In, and the Gaburincho call triggers the Kyoryu Change transformation. Gabutyra names the T. rex partner of Kyoryu Red. Clips of the sequence spread through tokusatsu fan edits, Power Rangers comparisons, and meme videos, where the distinctive shout remains popular for its mix of samba rhythm voice lines and dinosaur themed hero energy.