Sirius's son

Niffler and Mr Crouch

When Rigel and Eliza had gone down to the kitchens to see Dobby, the usually welcoming house-elves pushed Eliza out of the door leaving a confused Rigel with several pastries. 

Harry told them that the reason why the house-elves wouldn't let Eliza in was that Hermione finally lost it- she went on a long ramble, telling the elves that they deserved equal rights and that they had just as much right to be happy as wizards did.

This had occurred after Ron, Harry, and Hermione had seen the state Winky was in. She was some sort of drunk elf and was practically wasting away in those kitchens.

Harry had suggested that Winky should've gone to see Crouch because he was judging the tournament. Winky then went on to say something about Crouch having a secret.

It was a bit fishy but Rigel didn't bother much about Crouch's family secrets

"Can't you two sit next to each other without kissing for even just two minutes?" Ron finally snapped.

It was at breakfast when Rigel and Eliza felt a bit more like a cheesy couple but neither really cared. 

"Oh, shh, ickle Ronnykins, eat your eggs," Rigel scowled, with his arm around Eliza's waist

"Yeah, you'll understand one day when you're older and more mature," Eliza added.

"I'm older than you two!" Ron exclaimed

Rigel ignored him.

When the post owls arrived, Hermione looked up eagerly; she seemed to be expecting something. 

"Percy won't've had time to answer yet," said Ron. "We only sent Hedwig yesterday." 

"No, it's not that," said Hermione. "I've taken out a subscription to the Daily Prophet. I'm getting sick of finding everything out from the Slytherins." 

"Good thinking!" said Harry, also looking up at the owls. "Hey, Hermione, I think you're in luck —" 

A gray owl was soaring down toward Hermione." It hasn't got a newspaper, though," she said, looking disappointed. "It's —" 

But to her bewilderment, the gray owl landed in front of her plate, closely followed by four barn owls, a brown owl, and a tawny. 

"How many subscriptions did you take out?" said Harry, seizingHermione's goblet before it was knocked over by the cluster of owls, all of whom were jostling close to her, trying to deliver their own letter first. 

"What on earth — ?" Hermione said, taking the letter from the gray owl, opening it, and starting to read. "Oh really!" she sputtered, going rather red. 

"What's up?" said Ron.

 "It's — oh how ridiculous —" 

She thrust the letter at Harry, who saw that it was not handwritten but composed from pasted letters that seemed to have been cut out of the Daily Prophet.

 You are a WickEd giRL. HarRy PotTER desErves BeTteR. GO back wherE you cAMe from mUGgle

"Muggle really get your facts right" Rigel shook his head. 

"They're all like it!" said Hermione desperately, opening one letter after another. " 'Harry Potter can do much better than the likes of you. . . .' 'You deserve to be boiled in frogspawn. . . .' Ouch!" 

She had opened the last envelope, and yellowish-green liquid smelling strongly of petrol gushed over her hands, which began to erupt in large yellow boils.  

"Undiluted bubotuber pus!" said Ron, picking up the envelope gingerly and sniffing it.

"C'mon Hermione, let's get you to the hospital wing," Eliza said helping Hermione.