"baka" is "baka" -- this is the internationally accepted romaji for the word "idiot." "Baakaa" is "Barker," which can alternatively be romanized as "Ba-ka-" or

"baka" is "baka" -- this is the internationally accepted romaji for the word "idiot." "Baakaa" is "Barker," which can alternatively be romanized as "Ba-ka-" or "Bākā." It's never "Baka," whether written or spoken. The vowel length completely changes the word into a name and either one is recognizable at a glance to someone who knows Japanese. Someone who deliberately chooses "baka" despite knowing some Japanese is also deliberately choosing to play on words that people with a passing familiarity with Japanese or anime will mistake for "idiot." It's not an innocent or clever choice.