My name is Shotaro so I can say this: The -taro part just means first born boy. The Sho- part's meaning depends on what kanji is used for Sho. The most common kanji for Sho means justice/or right. There are variations for the kanji used each symbolizing different things.
Do you mean Orochimaru? Orochi = Large Serpent Maru = common male japanese name.
The meaning of it is not known. It is, however, a male's first name, and it is of Japanese origin.
It means "fragrance" And is a male name. The female version of the name is "Kaori"
Kenzo is a given name for a male. It is of Japanese origin. The name means wise, three or strong and healthy.
The only name for both female and male names that mean death is Shi.
Assuming that you mean Mika, Mika is a given name for a male or female. It is of Japanese origin. Mika means beautiful smell.
Kaneta is a not a popular name, but it is often used as a male first name. Despite the use as a boy's name, Kaneta means 'Marissa' in Japanese.
"Kido" means demon child and "maru" is a common way of ending male Japanese names.
"Olga" is not a Japanese word or name, so it doesn't mean anything at all in Japanese. Did you mean, "What is the name "Olga" translated to in Japanese?"
有事 (yuuji) means 'emergency' in Japanese. Yuuji is also a common male name, which may be written any number of ways. This means that there are many different meanings of the name.
The name Michelle does not mean anything in Japanese, but can be written: ミシェル
The name 'Collin' does not mean anything in Japanese, but it can be written in Japanese as: コリン