This = コレ ("This" is usually not writen in katakana.)
hiragana katakana and kanji and furigana which is a mix of hiragana and katakana
シマ
You'd write it in katakana: ジェニ
You'd write it in katakana: ジョ
Maggie = マーギ
It is written アニメ
In Katakana "サブタイトル”
ジュース (juusu)
Kimberly = キームバリ
Well, honey, to write "sweet" in Katakana, you'd spell it out as "γΉγ€γΌγ" (su-i-to). Just remember, Katakana is used for foreign words, so make sure you're talking about something sugary and not your grandma's apple pie recipe.
In katakana, "Kay" would be spelled ケィ