Sharks are known as largely solitary animals but in the case of Nanaue, aka King Shark, that isn't the case. Or at least, he doesn't want it to be the case, as much as all of his attempts at connection fail him.
If you're a Libra, then you're King Shark. That may seem strange. After all, one of the defining characteristics of Libras is that they hate being alone, and do best in pairs. King Shark is perhaps the least communicative of all the Task Force X members in either movie. But his failure at communication isn't his choice and the first thing we see him do in Belle Reve shows us that's the case. When Amanda Waller, Bloodsport, and Peacemaker first encounter Nanaue, he's "reading" a book. The book is upside down so he clearly isn't getting any useful information from it, which means there can only be one reason for it — to impress the people around him.
Really, except for when he's attacking and/or eating people, everything King Shark does shows us his unfulfilled need for connection. When Task Force X gets in disguise to infiltrate La Gatita Amable, he's enraged that he can't go with them. He makes Peacemaker a doll, he has to be scolded off the comms during the abortive attempt to rescue Harley Quinn, he interrupts the mission briefing to indicate he has a hand, and he's thrilled when he thinks he's made underwater friends on an upper floor of Jötunheim only to learn they want him for lunch.
