I love the Sengoku Basara games and anime but it still pisses me off what they did to Lord Oda Nobunaga. He was a great leader and brutal warrior who once called himself Dairokuten maou meaning "Devil King of the Sixth Heaven" most likely as a joke. Which people now take literally and make him into a monster.
Sure he killed his mother and brother but they conspired against him to start with and he would have looked weak if he sat by and did nothing. Then while he was crushing his enemies in Japan the events at Honnoji happened leaving him dead.
Then Lord Toyotomi Hideyoshi avenged his death and unified Japan under the Toyotomi banner to finish what Lord Oda started and he even fell ill trying to accomplish Lord Oda's dream of conquering China. Then Sengoku Basara decided to make him evil.
Before Lord Toyotomi died he requested his son Hideyori to take over as the new leader. Then Tokugawa Ieyasu betrayed Lord Toyotomi and even had the nerve to force Hideyori to kill himself and to behead Kunimatsu, Hideyori's 7 year old son.
Yet Capcom chose to idolize the traitor Tokugawa Ieyasu while making the loyal Ishida Mitsunari look like a madman.