So I have two accounts. One is level 151, the other at max level. I noticed the lamp hero had like 4000 ish hp one time and soon promoted him/leveled him and had a lot less hp like 93 hp or something super low. Then I promoted/leveled him again and his hp went up to like 2000ish. Which is better than 93 but not the 4K he had before. So I started to take pics between my accounts. There is definitely something wrong with the hp stat.
Also, sorry about assuming lamp’s gender… looks male to me.