Streaky has absolutely nothing on Dex-Starr of the Red Lanterns (by way of Eearth)! This cat was like many domesticated felines in that he lived with a human who took care of him. She was senselessly and brutally murdered leaving behind one pissed-off kitty whose heart was so full of rage he earned the notice of the Red Lanterns. His powers include blood spit that melts things, flight, ability to create constructs like Green Lanterns (at times), and a personal but limited forcefield for space travel.
He was everywhere during Blackest Night and was in the Red Lanterns series during the DCnU reboot. Sadly, he’s not in as many books now BUT he has the power of being painfully adorable and so cute I can’t even deal with it oh my goooooooood