Just Kill 'Em

A pair of twins, Henry and Jessie Spinner, from the novel my brother and I are writing called 'Killing Time'. The male is a professional assassin and the female is a suicide artist (that is, she plans and carries out people's suicides). Penciled, then inked by hand and colored in Photoshop, as usual. Here's an excerpt from when they're interviewing the third main character, Joey Davidson, for an assistant position at Spinner and Spinner:

The boy was still standing awkwardly at the doorway. “Come closer,” snapped Henry. The boy did as he was told. Henry looked closely at his face. “Are you vindictive, malicious, evil, or slightly insane?” he said quickly.
“Um…I guess I can be kind of mean. This one time, I cut a guy in line at the movies…” the boy said pathetically.
“Wow,” said Henry, the sarcasm practically oozing from his pores. “I am really impressed. You might be a little too experienced with this.” He shuffled some papers on his desk (he loved shuffling papers, it made him look important) and said, “Now, do you have any problems with murder, thievery, or general crime committing?”
“W-what?! This is a joke, right?” said the boy. Upon getting no answer from Henry, he turned to Jessie and demanded, “Right?” She carefully examined her nails.
“Depends,” said Henry finally. “Are you related to or acquaintances with any police officers?”
“Uh…no?” said the boy, thinking to himself, ‘Should I be?’
“Then no, it’s definitely not a joke,” said Henry. He paused for a moment, shuffling more papers. “I kill people a lot,” he added offhandedly.
“Henry!” shouted Jessie.
“Relax!” said Henry, smiling at his sister. He turned to the boy. “Name, please?”
“Joey,” said the boy warily.
“Joey. Joooooo-eeeeey…” said Henry, rolling it around on his tongue. “I like it. Okay, Joey, half of the time you will be assisting me with revenges. The other half can be spent helping my lovely sister Jessie with her suicides. Twice the service and half the guilt!”
“What?” cried Jessie indignantly. “I have to help depressed or insane people off themselves! Twice the service and thrice the guilt!”
“Well, at least your clients want to die. I commit murder,” said Henry proudly.
“Then why do you never feel guilty?” whined Jessie.
“I distract myself with crosswords,” said Henry nonchalantly. This was a common argument with them. They both suddenly noticed that Joey was still there. “Oh,” said Henry.
“Right,” said Jessie, walking over to him.
“Disturbed kid,” said Henry, trying out the nickname. He decided he liked Joooooo-eeeeey better.
“Hey, you can either accept the job now or think it over,” said Jessie. Joey was shaking as he backed away to the office door.
“Right! See you later!” said Henry, waving happily. He sat behind his desk and put his feet up on it. “I think that went well,” he said.