(adsbygoogle = window.adsbygoogle || []).push({}); This is what i found on another website i found it pretty good and i want it to share it with you if u haven't seen it already.
In Der Riese, I have noticed that our 4 heroes respond to eachother in defferent ways.
I have compiled this information mostly from the quotes said in-game.

Tank: Likes Takeo, wants to help him it seems, doesn't like Ritchofen, wants to expose or embaress him, not really anthing strong for Nikolai

Tank talks about Takeo and Ritchofen mainly, I have harly ever heard him say anything about Nikolai, except responding to him, for instance Nikolai says that the monkey bomb looks poweful, and Tank says "Why don't you throw it at Ritcofen". When he talks about Takeo it is always in a good manner. Things like "Takeos surrounded, we gotta help him" or "Nice shot Takeo" when Takeo gets a head shot. He seems to like Takeo, and wants to help him. When he talks about Ritchofen he says things like "Look at Ritchofen, surrounded by his own creations", "Ritchofens surrounded, poor Kraut", "Ritchofen, the monkeys not alive, quit talking to it" and "I think Ritchofens having a family reunion". Methinks Tank must know alot about Ritchofens history, and he obviousley does not seem to like him very much.

Nikolai: Hates Takeo, tries to undermine him, likes Tank, congratulates and complements him, nothing strong towards Ritchofen.

Nikolai seems to ridicule Takeo, saying things like "Is that the warriors way Takeo, all talk and no ?fight?", "Im killing them, your killing them, even ******* Takeos killing them", it seems like he want to embaress him. When he talks about tank he says things like "Oorah, the marines Dempsey" and "Your almost as brave as me Dempsey", Nikolai likes to compliment Tank, be nice to him like =P

Takeo: Doesn't like Nikolai or Tank, no strong relation to Ritchofen

Takeo says things like "My weapon is like Dempseys head, empty", "Nikolai has monkey, monkey is smarter of the two", "Your a weak fool Nikolai" and "Even a monkey is smater than Nikolai". He makes it clear that he does not like either of them.

Ritchofen: Ive only ever heard 3 quotes in relating to other characters from Ritchofen, apart from Maxis and Sam of course, "Once again, Nikolai leads from the front", "Facinating creatures don't you think Nikolai" and "This must be how Dempsey's mother must have felt when he was born!". Theres not realy enought to work out full relations with the characters there.