In The Parodies
The Hindi Hitler, just like the other Hitlers, is at conflict with Downfall Hitler. Unlike the other Hitlers, he is more angry, and keeps shouting at everybody, being nearly as aggressive as War and Remembrance Hitler. He is known to refuse his help and kept shouting at Hitler until he decided to stop talking with him.
During a meeting where he participated along with Hitler and Inglourious Basterds Hitler, the Hindi Hitler suggested that Steiner should find Fegelein, but the others disagreed and the meeting immediately turned into an insult brawl and then into a fight.
In the War of The Hitlers, he is one of the major players in the war and is defeated by the real life Hitler. He is also one of the Hitlers who accepted his defeat and is convinced that "no one can stop the real life Hitler". His own soldiers defected to Downfall Hitler at the end of the series.
The scenes where he appears are similar to the ones from Downfall. It's quite possibly that this is what makes him angry, the fact that he's limited to the same scenes as his Downfall counterpart.