|Heavy Isotope "Iso"|
|First appearance||September 22, 2014|
|Family||Heavy Water (father)|
“You don't have to be perfect.”
He isn't actually radioactive.
Iso is rather shy, he would rather talk to his notes than to another pony. That's why his lab assistant, Ultraviolet does her best to drag him out.
A late bloomer, Iso didn't find his special talent until college... When he blew up the science lab. He was banned from practicing any sciences that could lead to another explosion. He now spends his days searching for ways to produce non-magical energy safely and effectively.
And as far away from ponies as he can, as stated by his probation.
Recently came to Ponyville with his partner, Ultraviolet in search of research space.