whatever reason   (なんらかの理由で)

For whatever reason, Perdiccas stood for some time without reply.

"For whatever reason, we didn't play well today," Tennessee coach Lane Kiffin said.

For whatever reason, the two dealers have not spotted the difference in the prices, but the arbitrageur does.

whatever it takes   (命をかけて)

We'll do whatever it takes to make it happen."

We love being in this band, and we’ll do whatever it takes to continue."

They are normally portrayed as snooty and ruthless and do whatever it takes to keep the status quo.