Talk:Echidna/@comment-180.246.149.7-20190618021903/@comment-2600:1008:B14F:3604:AD61:C49D:F567:19B-20190618052937

Neither. Her name is エキドナ. Echidna, Ekidona, and Echidona are all attempts to express that name in english, but none of them capture it perfectly. Pick your favorite.