Haze Shenron Character Facts

Although he seems to have tremendous durability, Haze Shenron is physically the weakest of the Shadow Dragons; he felt a great amount of pain when a single brick fell on his foot, and Trunks was able to completely dominate him by hirself. However, his elemental abilities are his trump card; the pollution he generates slowly weakens normal beings, so while he remains relatively weak when it comes to scouter readings, his opponents gradually weaken until he is able to overpower them. However, his pollution has no effect on non-organic beings, such as the Machine Mutant Giru. 
He is the Two-Star Dragon and represents the element of pollution or toxicity. He was born when Upa (one of Goku's old friends) wished his father, Bora, back to life after being killed by Mercenary Tao. 
Haze is arguably the weakest among the Shadow Dragons. He is only proficient in battle after his element of toxicity/pollution has taken its toll on his enemies. His frailness makes him more a comic relief than an actual foe. He is also the only dragon not able to transform. Overall, his endurance more than his raw power is what prevents to be taken lightly by his opponents and by the time they discover his strategy it might be already too late to defeat him.