Dad Mark said: “It is amazing the things he knew. He would learn things so fast. He was like Einstein.
“It was bonkers how this kid of 15-years-old could learn languages and laws.”
Jason’s dad said his son also wrote books in his spare time.
He added: “He loved animals, he loved his siblings, he loved a good protest.
“He loved theme parks and extreme rides.”
Bexhill College student Jason had thought about becoming a zookeeper.
His mum Emily said Jason’s love of animals even led to him bringing a pigeon on a bus and a chick to Asda.
Mrs Pulman also spoke about her son’s sense of humour.
She said: “My phone is full to the brim with him stealing my phone and taking pictures of his face doing ridiculous things.”
Jason’s parents also explained how their son would design his own clothes.
Mr Pulman said: “He made his clothes. He basically invented himself four-and-a-half years ago.
“You always expected the unexpected with Jason.”
Mrs Pulman added: “He loved the shock factor but not in a bad way, to make people laugh.
“He was literally everyday covered in messages.
“All his clothing had patches and badges sending a message out to people.”
Mrs Pulman said her son would also make jewellery and alternative teddy bears to sell online.
Jason’s parents described their son as a very sociable person.
Mr Pulman said: “He found his own niche with every person he met.
“He was a joy to anyone around him. You certainly wouldn’t forget him.
“He didn’t see the bad in anyone.”