Fergus, Farkle and Felicia, better known as the Ogre Triplets, are Shrek and Fiona's triplet children. They appear in Shrek the Third, Shrek the Halls, Shrek Forever After and Scared Shrekless. They say their first words in Shrek Forever After and Scared Shrekless.
Shrek the Third
It is revelead that Fiona was pregnant and that was bothering Shrek a lot during the film. At the end they were born and appeared in the credits along with Donkey and Puss.
Shrek Forever After
A big party is held in celebration of the triplets' birthday and everyone was invited. But Shrek got a little mad because everyone now saw ogres as cute and nice creatures, and when he got enough of that he slammed their cake and went outside. When in the alternate universe of Rumpelstiltskin, they've been mentioned several times but only Felicia's doll was seen.
At the end of the film, Shrek got back before he slammed the cake and happily celebrated the children's birthday.
The triplets say their first words in Shrek Forever After and Scared Shrekless.
If the viewers watch the Dronkeys and ogre triplets carefully throughout the whole franchise, one can see that they aged perfectly in real time.
Felicia learned to talk before her brothers as she was talking in Shrek Forever After while Fergus and Farkle weren't talking until Scared Shrekless. This is a nod to a true fact in child psychology that states that young girls will learn how to talk before boys will.