Meanwhile in Mr. Herriman's office...
"I can't believe you've found them after all these years." A woman smiled to the imaginary rabbit friend.
"It's amazing," The man added. "I mean, I imagined Imaginary Man back when I was 9-years-old, and my sister here made Nemesister just to bug us."
"Yes, yes, sibling rivalry and whatnot," Mr. Herriman replied. "We hear that story quite often. Now, are you quite sure you want them back after all this time?"
"Absolutely, my son would just love a superhero imaginary friend; he's going to love Imaginary Man." The woman smiled.
"And my little daughter is all about things pink and rainbows," The man added. "I think Nemesister is a perfect fit with her."
"We'll be like one big happy family again!" The woman beamed.
"I'm so glad Grace told us that you found our imaginary friends." The man smiled at Mr. Herriman.
"Ah, yes, very well, just sign here and here, and they're all yours." Mr. Herriman said, handing the adoption papers over.
The two adult siblings smiled before signing the forms together.
Outside the house, a cute little girl was collecting flowers from a bush until she got hit by a Frisbee in the back of her head. "Ow!" The little girl complained before seeing a little boy laughing before she threw mud at his face.
"Hey!" The little boy glared.
"You threw that at my head on purpose, you creep!" The little girl glared back.
"It's not my fault you can't catch, you big, dumb girl!" The little boy retorted.
"Halt citizens!" Imaginary Man and Nemesis called out as they landed in front of the two kids.
The two kids looked over.
"That's no way to treat your sister!" Imaginary Man glared.
"Or your brother!" Nemesis added with a smirk.
"Uh... We're cousins." The boy replied.
"Even so, that's not proper behavior." Imaginary Man said.
The others soon came looking for Imaginary Man and Nemesis as they seemed to just up and leave them in the laundry room.
"Yeah! This is!" Nemesis smirked, shooting a rainbow at the young boy.
The boy yelped and then the girl ran towards Nemesis in excitement.
"That's my girl." Nega Power Man smirked.
"Why, you-" Imaginary Man glared, flying over as he saved the boy and soon shot mashed potatoes at Nemesis and the little girl.
"Augh! My hair!" Nemesis and the little girl cried out.
"And they're off." Atticus said.
Mac and Bloo were soon finally getting their tree-house put together.
"And so, once again, the day is saved-" Bloo began.
"Why does that sound familiar?" Cherry wondered.
"Right, sidekick?" Bloo then continued to Mac.
"Sidekick? I'm not your sidekick, you're my sidekick." Mac told Bloo.
"Pfft! You wish." Bloo crossed his arms and rolled his eyes.
Mac soon glared and tackled his imaginary friend.
"Hm... I wonder what else is on?" Eduardo muttered as he ate his cereal.
"Well, that certainly was interesting." Cherry said.
"Tell me about it," Atticus said. "Superhero episode."
"I know you enjoyed it." Cherry smirked.
"Yeah, I kinda did." Atticus nodded.
"Nice costumes even if you can't match the real thing, but aren't you guys too old to pretend to be superheros?" The little boy asked.
"Pretend?!" Cherry glared.
"Yeah, nice try, but you guys don't look anything like the real Lady Gothika, Saiyaman, Saiya Dog, and Nature Girl." The little girl commented.
"Why, you little-" Cherry started.
"Oh! Uh... Heh, don't worry, we'll work on it," Atticus smiled bashfully, covering Cherry's mouth. "Superheros aren't just for little kids though."
"He's right." Super Power Man nodded.
The kids shrugged as they went off with Imaginary Man and Nemesis, deciding to keep the two as their own imaginary friends.
"Wow! Cool tree-house!" The boy smiled.
"It sure is." Patch nodded.
Mac and Bloo soon came out.
"Is this like your Fortress of Solitude?" The boy asked.
"Uh... Well... It's mostly something I did for fun with Bloo." Mac smiled.
"Yep." Bloo nodded.
"Mind if I come in?" The boy asked.
"No way, kid!" Bloo glared. "This is a Mac and me only thing!"
"Bloo..." Mac scolded. "Come on in! Uh... What's your name?"
"My name's Lee." The boy smiled.
"Nice to meet ya, Lee." Mac smiled back.
Bloo looked annoyed that Mac made a new friend as he soon joined them in the tree-house.
"Gotta get away from Cynthia." Lee said.
"Your sister?" Mac guessed.
"Cousin." Lee corrected.
"She must be annoying." Bloo said.
"She really is," Lee rolled her eyes. "Especially with the flowers, the rainbows, and the ponies."
"Ugh!" Bloo groaned.
"Well, Imaginary Man, it looks like you have a new sidekick after all." Super Power Man smiled to Imaginary Man.
"Yes, Super Power Man, I believe I do." Imaginary Man smiled back.
"I wonder how Grace found out about Foster's?" Mo said.
"Yeah... It's a curious question..." Cherry replied.
"Yeah, it's almost like she knew all along or one of us or two of us told her about Foster's." Patch said.
"Yeah..." Cherry replied.
"Cherry?" Patch asked.
"Okay, it's a long story, but bottom line, Mac's mother is cool with him coming to Foster's, though I'm sure Terrance is trying to get his little brother in trouble." Cherry rolled her eyes.
"And where Terrance will fail." Mo smirked.
"Uh-huh!" The others nodded in agreement.
World soon came to join the others in the tree-house as things were wrapping up nicely back in Foster's as it should had been, especially with Imaginary Man and Nemesis reunited with their creators, but were going to be the imaginary friends of their children, and where Nega Power Man was going to make sure to stay in touch with Nemesis.
"It was a nice ride down the road, Nega Power Man... We'll be in touch." Nemesis said.
"I really hope so." Nega Power Man smiled to her.
"We sure will." Nemesis smiled back.
The two soon shared a hug with each other.
"Are they a thing now?" Cherry asked.
"I guess they are." Super Power Man said to her.
"Huh, did not see that coming." Patch said.
"I have no other words..." Cherry said before walking off. "What's next, Lex Luthor and the Joker come help the Justice League?"
"Yeah, like that will ever happen." Atticus said.
They soon left Foster's.
"You guys coming back soon?" World asked.
"Of course we are," Atticus smiled. "See you around, World. Take good care of the house."
"I will." World smiled back.
The others smiled to him as they went home for the day after another misadventure in Foster's Home for Imaginary Friends.
"That sure was interesting." Atticus said.
"Yeah, not a typical visit," Cherry replied. "I kinda liked that toy chest that World sent us to."
"That was nice, but I could use a break right now." Mo said.
"Same here." Atticus said.
"You don't think there's a chance we could visit the Supernatural Spa, do you?" Cherry asked, almost too hopeful.
"Maybe." Mo said.
They soon left after they finished yet another misadventure, and it seemed like Mac had some new friends to play with who weren't imaginary, and where that made Grace smile as this was good news.
The End