Leopold Slikk appeard on Youtube at 2006 as The angry German Kid
MARIO KART 9?
Leopold Appeared in Mario Kart 9 as a cruiser and Unlockable.
SUPER SMASH BROS 5?
Leopold Appears as a Default and Pllete Swap with Jake. He is in the SS Tier
Chronicles of Sqeegee
Leopold Slikk Appears as One of the Protagonist
- Leopold's full name (Leopold Andreas Slikk) Andreas is probably a reference to the video game Grand Theft Auto: San Andreas.
- Some people confused his hair colour for black or brown in the original video.
- In Cubsrule2040's AGK Series, Leopold smashes the phone every time he is told the principal will notify his parents that he is suspended.
- Sometimes, Leopold used harsher profanity in some episodes.
- Leopold's Eskimo name is Tukkuttok.
- In Deception RPG (on YouTube) Episode #2 and #3, Leopold Silkk made a cameo.
- In the LOL Cite series (on YouTube) Leopold Slikk also made cameos.
- In Brian Chiem's AGK series, his birth date was August 12, 1996.
- Leopold is the 17 out of 31 people to get any stat maxed up.
- He made a cameo in one of Angry Joe's reviews (Guild Wars 2).
- In Pokebob1's sprite series The Untold Stories Of Paper Mario, he made a cameo (On Episode 19) when he was running with everyone on the Mushroom Kingdom.
- In TheFineBros's Youtube video called "50 YouTube Spoilers in 4 Minutes" Leopold Slikk make a cameo.
- Leopold appears as a protagonist on Alexneushoorn's show The Paper Mario Super Show.
- Leopold also appear in some YouTube Poop videos.
- Leopold's favourite food is Sausage Eggs.
- In Nein Cat's Angry German Kid Series Leopold wear a different equipment which is base on;
- Leopold Atlasia based on Sion Eltnam Atlasia of Melty Blood
- SOS Leopold based on Haruhi Suzumiya Suit of The Melancholy of Haruhi Suzumiya
- SB-913LP Mecha Leopold based on SB-913V Side Basshar of Kamen Rider Faiz (555)
- In pauladrian360 Angry German Kid Series Leopold wear a different clothes which is base on;
- Evil Leopold based on Dracula of Castlevania
- Hurricane German Kid based on Professional Wrestler "The Hurricane"
- His Current Future outfit based on Jak
- His Armor is based from Ratchet and Clank a Crack in Time
- In later pauladrian360 Angry German Kid Series Peter Sundler (Captain PS) was more of his close friend than Jake.
- Leopold doesn't seems to be Angry in Angry German Kid in the Future.
- In TakerTV1's Angry German Kid Series, Leopold is 18 years old.
- Leopold was actually acting to show the effects of people playing violent video games.
- In Armordude91122cute's agk series, Leopold Slikk Clothing Is Smiliar To Sniper's From TF2
- Leopold also called Fegelein by Hitler.
- There is a Korean keyboard company named after Leopold, founded in 2006.
- In Tanzim K's AGK Series, Leopold's ancestries are Mexican and Swiss, though he has some indigenous descent from his father.