???'s POV
'I saw a strange bluish creature lying down, groaning from falling down from up above.
It got up and looked at me.'
"Hey, you look confused. Are you alright?" The creature asked me. I didn't respond.
This creature reminded me of something else that happened a long time ago.'

"Do you need help?" The creature asked me again.
"No.." The creature looked at me confused.
He held out his hand towards me. "Looks like you don't need help, but don't worry, I'll help.."

"Wake up, are you alright?" A voice asked out.
What is that kid doing here? I thought that brat was happy...

Normal POV

Sonic woke up on a patch of flowers.
He saw a kid wearing blue clothing, the shirt having two purple stripes.
His misty blue eyes showed concern.

"Thanks, where are we?" Sonic asked, wondering where he was.
The kid picked up Sonic's bag.
"Mt. Ebott." The child explained, handing the bag back to Sonic.

The blue blur got up.
"Thanks kid." He told his new acquaintance.
"How did you get here?" The kid asked, wondering how the blue hedgehog got here.

"You wouldn't believe it." Sonic joked as he laughed.
The kid in blue was in disbelief.
"So a talking blue rat is not?" the child asked.

"Hedgehog." Sonic corrected as he got up.
Looking around, seeing a hole up above them.
The hedgehog sighed. "Looks like we can't go up..."

The child looked around too.
"Why don't we go over there then?" They told the blue blur.
The two of them decided to enter a huge purple entrance, the top of the door frame having an almost faded symbol.

in another room, a single flower looked droopy.
It was right in front of a closed door.
"Howdy." The flower looked up and looked at both of them.

"A talking flower... How surprising..." Sonic looked at the talking flower with a bored expression.
The flower looked at the child.
"Frisk? What are you doing here?" The flower asked the child now known as Frisk.

Frisk responded by hiding behind Sonic.
"How do you know my name!?" Frisk asked, confused on how a flower knew their name.
The flower gave a look that looked like it was saying 'I don't believe you'

Sonic stepped forward and bent down to the flower's level.
"What are you?" The blue hedgehog asked.
The flower looked surprised. Confusion seemed to set in and the flower mumbled to itself.

"I'm Flowey, Flowey the flower..." The flower now known as Flowey told them.
Sonic stepped back. He snorted a little at the name.
"So this is your first time in here?" Flowey asked, as two crystal-hearts came out of both Sonic and Frisk.

Sonic's was golden, while Frisk's was whitish grey.
"Wasn't your Soul red Frisk?" Flowey asked towards the child.
Frisk looked at Flowey again, still confused.

"I have no idea on how you know my name, but I'm getting out of here!" Frisk shouted at they went towards the door and opened it.
Sonic looked at Flowey suspiciously, and ran to help out Frisk.
----
This is a just for fun fanfic/comic crossover series I wanted to do since it was in my head.
Don't worry, it's just not Undertale. There will be other places for Sonic and friends to visit.

Sonic the hedgehog (c) Sega
Undertale (c) Toby Fox