"I don't care what they call me," [the Fat Boy] said confidentially, "so long as they don't call me what they used to call me at school."
Ralph was faintly interested. "What was that?"
The fat boy glanced over his shoulder, then leaned toward Ralph. He whispered. "They used to
call me Piggy."
Ralph shrieked with laughter. He jumped up. "Piggy! Piggy!"
“Ralph-please!" Piggy clasped his hands in apprehension. "I said I didn't want,"
"Piggy! Piggy!" Ralph danced out into the hot air of the beach and then returned as a
fighter-plane, with wings swept back, and machine-gunned Piggy. "Sche-aa-ow!" He dived in the
sand at Piggy's feet and lay there laughing. "Piggy!"
Piggy grinned reluctantly, pleased despite himself at even this much recognition. "So long as you
don't tell the others—"

What do these quotes tell you about the “Fat boy” who is called “piggy” and his personality or character traits and what do these quotes tell you about Ralph’s personality?