Any scene where Dracula and Chupacabras the castle shop-keeper are on-screen together. With the latter kowtowing to your every whim and praising his excellency.
At some point in the past, Dracula had to have a prison made specifically for Chupacabras to cancel his teleporting, because his pranks and personality were driving the prince of darkness insane.
The look on Drac's face when Trevor asks him to find all of the broken pieces of the Mirror of Fate after enduring Agreus is absolutely priceless. The sort Dad's wear when they can see they are about to be really inconvenienced and would rather not accede to their child's demands but love and honour push them to attempt anyway.
A Brotherhood knight who meets his demise in Drac's castle is called Eddard S. (Notable, in that he's killed not by Agreus or any of the other monsters inhabiting the castle but by his own commanding officer. Who cracks under the strain and ends up mortally wounding Eddard because he was the only one brave enough not to flee and instead stands by the lunatic. Poor honorable fool. He also mentions that one of the trees with red leaves may have had a face carved in it...)
One of the knights in the City of the Damned drank something from the Chupacabra's shop that made him drunk. His last moments of life were spent having a laughing spell at seeing his scroll write out his drunk thoughts (which you read).