RollingManiacGirl, commonly abbreviated as RMG or Aremgee, is an American rapper from Chattanooga, Tennessee, she was born on December 11, 2009 and her real name is Nicholas Ayediaen Castus, and she has been making music since 2021, she first released her meme single “rollerskates” in 2021 as a joke, she later stated that she was just testing out a new AI chatbot and asked it to generate lyrics, then she sang them.

She started out as “nikkicastus”, and people called her “Rolling maniac” so she ultimately changed her alias to “RollingManiacGirl”

On June 16, 2024, she released her most popular song “HIVACY”, which sort of blew up, even though (at the time I’m typing this bio) she has about 250 views on YouTube, but she is a very small artist, so for her, this is a huge milestone.

Her YouTube bio as of Sunday, October 19, 2025 is:
“High as a kite ):
in 2024, 14 year old Chattanoogan "Nikki Ayediaen Castus” made a YouTube channel named “nikkicastus” and then released a song named “Back to Blue” and people called her “Rolling maniac” which then she renamed her channel to “RollingManiacGirl” and released more music and now here we are, this is the exact same channel!
Some facts about me:
I once had an eye bleed and had to go to the hospital for 5 days when I was 10 years old
I once used my mom’s credit card to fix m computer, RIP Credit Card
I actually used to have blue hair from when I was 8 to 12
When I was 12, I accidently found classified information about Minecraf, also I will tell u guys so u don’t go crazy
One time when I was 13 I climbed a water tower and a cooling tower in the same day
I used to sneak into festivals back when I was 8 to 14, I stopped when a police guard tried to arrest me, I drove a golfcart out
One time I punched my brother Jace in the face and he shot me with a Nerfgun with gun bullets"

On September 19th, 2023, Castus was charged with aggravated criminal trespassing, but was later released after only 6 days in jail
Cause of arrest: Climbing a cooling tower
Cooling tower (rumored): Old Hartsville NPP tower

In September 2024, RMG was charged with operating a 61Fords electric scooter without a license on Amnicola Highway in Brent Port Village at midnight. She was initially detained for 10 hours, though her sentence was later extended to 15 hours. During her detention, authorities permitted her to bring a synthesizer, laptop, and a battery with a power strip. She was also provided with a mattress, sheets, and blankets, allowing her to continue creating music while in custody.
Though this arrest was actually not true police. it was a fake arrest.

While at Chattanooga State, RMG received a disciplinary write-up for allegedly providing false information. She maintained that she had only stated her detention duration of 15 hours and expressed concern that the record could become permanent.
Though this arrest was actually not true police. it was a fake arrest.

During her time in custody, RMG continued working on music. She had initially planned to release a song titled Rage, but due to timing and logistical issues, the track was ultimately renamed It’s Gonna Be a Long Motherfucking Way as part of an EP of the same name. She publicly addressed the delay and clarified the release schedule.
Though this arrest was actually not true police. it was a fake arrest.

These events highlight RMG’s early dedication to music, even under challenging circumstances, alongside minor legal and disciplinary issues.

She is a member of the Klanned Up Clique