Heimdall (pronounced “HAME-doll”) is an Aesir god with a big job: searching the Nine Worlds for signs of Ragnarok. Ever since his debut in The Hammer of Thor, we’ve been in awe of his ability to guard the Bifrost while maintaining an extreme addiction to his smart device—AKA Gjallar, the Horn of Doomsday.

1. Heimdall has impressive Norse lineage.

Son of Odin and brother of Thor, he was somehow born of nine mothers. We’re unclear how that went down, exactly. In any case, it makes Mother’s Day a real traffic jam.

2. Heimdall can see into all of the Nine Worlds.

As guard of the Bifrost, the bridge to Asgard, he needs to see ALL to keep an eye out for signs of Doomsday: from the fire giants of Muspellheim to the humans of Midgard (where demigods also dwell). We’re told his selfie with Magnus Chase is really special to him.

3. Heimdall has great hearing, too.

As the founding member of the “Nine Worlds Neighborhood Watch . . . Patrol?”, it helps that he has good ears. If you ever find yourself having a private conversation with your friend, know that Heimdall could be eavesdropping.

4. Heimdall’s ram’s horn, Gjallar, is highly versatile.

Gjallar is crucial in preventing attacks on Asgard, and now, thanks to Uncle Rick, it also morphs into a tablet-sized smart phone, or “phablet.” (Is anyone still using that word?) Occupational hazard: butt-dialing the apocalypse.

5. Heimdall invented the selfie stick.

He would correct you and call it a selfie sword. He has great pics of everyone—presidents, pop stars, ice giants, you name it. If you ever find yourself near the largest illuminated sign in Boston, maybe you’ll be next. Look up! Believe! Catch the rainbow!