flowey is the strongest monster. it takes one hit for a lvl 15-19 frisk can do 90-100 thousand dmg in one hit. (mtt neo dies) a lvl 20 frisk can deal 10 million damage in one hit. (asgore dies) flowey can survive eight hits of 10 million damage. that means flowey in his base form has about 71-79 million HP. omega flowey only died because of SEVEN human souls. if one human can kill 100 monsters, and do 79 million damage, omega flowey can survive 533 million damage in his omega form. in his Asriel form, he literally has infinite HP. flowey is stronger than everybody else in the entire underground COMBINED. need I say more?