Simplify the following text for a Grade 4 native English-speaking person.
Original: While his two remaining companions from the Kharlan War , Kratos Aurion and Yuan , once supported his goals , the two have since begun undermining him , Yuan by leading an underground resistance movement and Kratos by helping Colette and Lloyd .
Simplified: Kratos is with Yuan and two of Yuan 's henchman . Lloyd learns that Kratos is his father .