"Next they'll be asking for children as collateral," he told the Herald on Sunday last week.
Superloans sells what it calls a "free" loan.
The company has an offer on its website for a loan of up to $500, interest-free for 28 days. But after this period, it charges 4 per cent in interest per week, or 208 per cent per year.
Both Cashburst and Superloans' websites feature a caped, cartoon mascot.
Cashburst's television advert tells viewers "don't panic - Captain Cashburst to the rescue" while a Superloans video on its website said it is "here to save the day".
Lawyers representing both sides appeared before Justice Mark Woolford in the High Court at Auckland yesterday, which heard Superloans had filed proceedings to restrain Cashburst from using the super hero logo in its advertising.
The case is due to be argued more substantively in February, but in the meantime Cashburst has agreed not to use the super hero in print or television ads, Justice Woolford said.
This undertaking from Cashburst does not include a run of TV ads booked to this Friday or a circular drop, the court heard.
The offers
Superloans
Up to $500 interest-free loan for four weeks, interest of 208 per cent a year after that.
Cashburst
Up to $500 interest-free loan for two weeks, interest of 552 per cent a year after that.
The scrap
The use of a super hero in advertising.