Luther Hargreeves
"Number One"
super strength and durability

Diego Hargreeves
"Number Two"
can throw any object with deadly accuracy

Allison Hargreeves
"Number Three"
can control minds with the phrase
"I heard a rumor..."

Klaus Hargreeves
"Number Four"
can see and talk to the dead

Five
"Number Five"
can jump through time and space

Ben Hargreeves
"Number Six"
can project deadly and powerful tentacles from his chest

Vanya Hargreeves
"Number Seven"
cataclysmic telekinetic abilities generated by sound waves

Y/n Hargreeves
"Number Eight"
can bend energy waves to create near-indestructible force fields and small, blunt weapons.