I never created Batman TAS canon.
The Sewer King stood with his arms behind his back while he waited for several children to appear. Bring multiple jewels and maybe even cash.
He frowned as he remembered yelling for them to go to the streets many minutes ago. How often did he yell? He couldn't remember. What he did recall was how sore his throat was every now and then.
''I have to yell at the children. They won't listen to me if I'm nice. They won't. They won't,'' the Sewer King said.
Children appeared with frowns on their faces until they walked to the Sewer King. Each child dropped a handful of jewelry near the Sewer King and departed for the streets once more. Lots and lots of other pretties for the Sewer King.
Smiling, the Sewer King lifted a pearl necklace and admired it.
''I didn't have to yell that time. No sore throat. The children are going to get lots of extra pretties for their king.''
Other jewels were admired.
THE END