Alex, of Mold in north Wales, had been visiting his local McDonald’s with his carer when he first met Mr Griffith.
The next day he went back again with his sister, who said: 'The carer told us how Aled had encouraged Alex to order his own food and find the right money to hand over without rushing him.
Impressed: Katie Deyes wrote on Facebook: 'Aled is a credit to the Mold McDonald's team'
+4
Impressed: Katie Deyes wrote on Facebook: 'Aled is a credit to the Mold McDonald's team'
'Aled remembered that my brother didn’t drink out of the bottle for his fruit shoot and offered me an empty cup without me having to ask.'
She added: 'He then came over to our table and offered to swap Alex’s happy meal toy as he had given him the same one the previous evening - my brother loves collecting these toys so getting an extra, new one, was really exciting for him.
'Aled said goodbye to us as we left and left Alex feeling really happy and has asked if we can go back again to sit in and I believe that’s because Aled was so friendly towards him.'
Mr Griffith said: 'To me it’s something I would have just done anyway so I’ve been a bit taken aback by all the fuss.
'I’m not complaining but I had a tough childhood - I lost my dad when I was seven years old and was put into care when I was nine.
'People thought it was funny and they would make fun of me and I promised myself I would never look down on other people who are disadvantaged through no fault of their own.
'It disgusts me that people stoop so low sometimes and I’ll always stand up to bullying.'
Mr Griffith said he was looking forward to seeing Alex again.
'I’d love to get to know him outside work and if Katie ever needs help I’m here,' he added.
A spokesperson for McDonald’s said: 'We are delighted with the kindness and thoughtfulness Aled has shown to Katie and her brother Alex.
'Aled is a valued member of the McDonald’s crew and is testament to the brilliant young people we employ up and down the country.
Read more: http://www.dailymail.co.uk/news/article-3667585/If-people-world-like-Friendly-McDonald-s-worker-remembered-just-autistic-teenager-liked-Happy-Meal-Facebook-hit.html#ixzz4D4gqPAhO
Follow us: @MailOnline on Twitter | DailyMail on Facebook