i feel terrible for all of them; RYan too; he never meant to hurt anyone and willing to face consequences and try and help shows what a good guy he is; idk if he can get charged unless he wasn't paying attention then that's a different story;

I wonder though if he's magical especially if he had something to do with alfredo's rebirth as Colombo (in a way)

this is such a cute fanfic; the love between pet and owner had created this little polterpup :) he wondered alone for years until he finally reunited with his master and would continue to protect him.

Well that ending was both unexpected and freaking adorable.

Ahoy there!

After specifically looking for stories where Polterpup plays a major role, this one here looked to be the most promising. No idea why he's not that popular (hopefully LM3 changes that), but I digress.

I can only go along with the other reviewers who said that this oneshot was emotional. Yes, it did touch my heart, the scenes with Luigi simply interacting with Colombo and then the tragic backstory which, sadly, is pretty realistic. And then the ending, though I'm not sure if Polterpup would more or less happily tackle and "assault-licks" him as if the plumber was returning from a long trip just for pointing out that Colombo his dead dog.
Basically, I'm glad just to read a story which shows a day in their lives. And from what I've read, it seems to be devoid of spelling- and grammar-mistakes. Thumbs up from me.
Also, nice that you've in fact thought out a plausible past for our plumbers and properly fleshed out their characters, especially Polterpup. :)

But now the ignominious other side of the medal. Please note that I don't intend to put your and your story down. If it appears to be like that, then I'm really sorry. I'll not tackle the stuff that comes down to a matter of taste, though.
Finally, feel free to contradict my points if you think they don't apply. The last thing I want is to present them as absolutes which have to be followed no matter what as I don't know everything of course.

First of, the notes. Six are really a bit much, as they interrupt the "flow of reading" since the reader will be tempted to scroll down only to look again where they stopped. Also, I'm sure that you can remove every single one. Why?
-No. 1 can be cleared by describing the "mansion". The Rank D-mansion is most likely a house, and not even a large one at that. It doesn't even have a garage and if the living room is already occupying the left side (when viewed from the front), then we can assume that it won't fit much.
-No. 2 is simply unnecessary information. It's nice to tell your readers where you got that name, but if one really wants to know, then he'll ask on his own. Personally I'm not interested and I have a different name for Polterpup myself (Like many others probably) where no one cares about its origins.
-No. 3 see above. Nice to tell the reader, but unless he wants to know, he'll not care and thus it'll put a damper in his flow of reading.
-No. 4: Since the reader will hopefully reach the end of the chapter, he'll see the translations anyway. It's enough if you include them in the order they appeared in the text.
-No. 5 see 2 and 3.
-No. 6 is especially superfluous since you already mention in the text that Luigi has witnessed Colombo eating two keys and a clock hand in his (second) mansion adventure. There's no need to tell it a second time.

Next the dreaded Flashbacks and time skips. Don't worry, your readers are smart enough to understand when those begin and end. Therefore it's on you to utilize your skills to make it clear to them. From what I've read, I can assure you that you can delete those "Flashback"- and "1 month later"-notes and nothing would change. Don't underestimate your writing!

Furthermore, the comments in brackets. Delete them, please. And then work them organically into your text. For instance, "The spectral canine passed through the front door (not the doggy door that he installed)." Why not just "The spectral canine then passed through the front door instead of the doggy door Luigi installed especially for him."? Looks better, don't you think? Also small comment: Why a doggy door at all, as Colombo can already phase through everything?

Finally, something what I would call a minor canon-error: You said that his mansion isn't built near a road. Now it's the fault of Nintendo for not showing more of his property, thus leaving much to our own imagination. But looking at the intro of LM2 again, he has a letter box. Sure, the Mushroom Kingdom has parakoopas working as postmen, but larger parcels still have to arrive somehow, correct? And unless Luigi wants to walk for a while just to reach the nearest bus stop (If there is one at all) or call a cab, I think we can assume that he has some means of transportation. Maybe you could incorporate it into your story?

Now you're through. :)
I can only reinforce that I don't intend to put your and your story down. If it appears to be like that, then I'm really sorry.

Nevertheless, I enjoyed reading the story and will keep it in my favourites. Good work!

That was a heartwarming oneshot you have. Jeez! Your stories have so many emotions!

Awww, what a bittersweet story! Polterpup was Luigi's old dog x3 How sweet!

I will admit, I did cry at the scene with Alfredo's death. My heart went out to poor Luigi becuase I can relate to him dealing with the heartbreaking feeling when it comes to losing a beloved pet.

The twist that Colombo/Alfredo was the Polterpup it was something I didn't see coming. It put a smile on my face as their reunion warmed my heart. Also, I liked the beginning with Luigi playing with Colombo at the start is adorable.

This is a beautiful, emotional story which I loved reading every second of it. This story is easily my favorite one-shot story that you've written. Excellent job!

Yeah, the polterpup is adorable!

Not going to lie I cried a bit when reading this because I owned a Maltese only a girl that we named Bella, for about 15 years ans she passed away 2 years ago so I got a little emotional reading about Alfredo/Colombo's death as well as his reunion with Luigi which I was expecting to be honest even before the reveal. So yeah reading this brought back some memories and even though this might be biased but this will probably be my favorite one shot story you write.

I cried when Luigi lost Alfredo. But when you revealed that he was actually the Polterpup, I was so shocked my mouth dropped. I loved this even though the flashback was very sad. This makes me more excited for Luigi's Mansion 3. The intro where Luigi was playing with Polterpup was just... Ah! So beautiful. :')

Aww, poor Luigi. I definitely felt bad for him, and I can see why he'd think it was his fault, even if it wasn't.

But I'm glad Alfredo came back to him in the end!

I didn't think you would go that far in terms of tragedy but man that was a sad backstory. It's never happened to me personally but it is a heartbreaking feeling. The ending did surprise me. I didn't expect that and I was genuinely happy that I shed a tear or two. Another job well done and happy birthday as well!