Gunner in Japanese

The name Gunner in Japanese Kanji is 具南 (tool, south), 具納 (tool, settlement), 愚南 (foolish, south), 愚納 (foolish, settlement) and more. In all, there are 4 expressions. And also the name Gunner in Katakana is グナー and which in Hiragana is ぐなー.