Keeping a low profile has caught up with Rob Kardashian.

Because according to his sister Khloe Kardashian, the 38-year-old’s “elusive” lifestyle has earned him an aptly mysterious new nickname.

“I call him ‘The Wizard’ from The Wizard of Oz,” she said on the April 16 episode of her Khloe in Wonder Land podcast, “’cause he likes to be behind the curtain.”

While Rob has largely stayed out of the spotlight in recent years—save for infrequent appearances via phone on his family’s Hulu reality series The Kardashians—Khloe pointed out he’s still very present in her day-to-day life.

“We all live in the same gated area,” she added, “so he lives right next door to me.”

Khloe, 40, has spoken frequently about her close relationship with Rob—who shares daughter Dream Kardashian, 8, with ex Blac Chyna—most recently reflecting on their tight bond in a post as she celebrated his latest birthday on social media.