He is obsessed with eating and can eat everything, including larger animals or other things (such as hyenas, an insect and fish). He is even capable to eat while sleeping, as he once bites Oggy's tail from the sleep. On the other hand, his appetite sometimes causes problems. For example, Dee Dee once eats so much food he isn't able to move and is easily caught by Oggy.
Like Marky, he is in complete admiration of Joey and he will follow him to the end of the world. Only in some rare cases, he complains about Joey's plans. When Joey falls in love with a bee and neglects his brothers, the two beat up his girlfriend at first and then fight Joey himself.
Although he usually only realizes Joey's plans without thinking, when it comes to getting some food, he appears to be very active. When Loch Ness Monster settles in Oggy's house and eats all his food, Dee Dee becomes angry and creates a plan to get rid of it. Eventually, he is the only cockroach who actually attacks the Monster. Joey and Marky don't care about it at all, so Dee Dee's attempt ends unsuccessfully.
- He is named after Dee Dee Ramone, the deceased original bassist of the punk band Ramones.
- He likes opera.
- Except big strength (for exmple ability to throw Oggy over the whole room), Dee Dee can do Kung-fu.
- Sometimes it is shown that his armpits are so foul-smelling, it is toxic and sometimes melts objects.
- According to It's a Small World, the cockroaches started abusing Oggy when he was a baby. In the flashback, they stole his pacifier, making him cry.
- Although his bad behavior, he and his brothers end up in Heaven along with Oggy when they all die.
- Dee Dee is the only cockroaches whose name is a part of titles of episodes more than once (three times until 2013).
- From Pakdam Pakdai, Motu is inspired By him.