No. None of the new characters introduced in Giants work with the original game.
Excellent English-German translators that work without internet connection are: Langenscheidt's English-German Dictionary Cassells' English-German Dictionary
Yes
Yes it is, me and my mate picked it up from GAME.
partner work.
Yes
Ich bin beim Arbeit
Urlaub Hausaufgaben is the translation in German. It is translated from English to German. German is mostly spoken in the European countries.
All Skylander figures are compatible with any of the available platforms, so any Skylander figure you find will work on your Wii version of the game. Only the game software and the Portal of Power are specific to particular platforms, meaning you'd need the Wii version of the game and the Portal of Power in order to play the game on your Wii. I should probably mention that you can plug in ANY version of the Portal of Power to a USB port on your PC in order to use it with the free-to-play Skylanders: Spyro's Universe game; although there may be a driver install process that you'd need to create an account for. See the related link.
It should be able to. If a game boy from America can play Japanese game boy games, your German game cube should work with American games.
German uses the same Latin alphabet as English (with one consonant and three accented vowels in addition), so exactly the same as in English will work fine.
The German word 'Hunde' translates into English as the word 'Dogs'. There are many websites that offer free translation services including Google Translate.