Powers & Abilities Loki Legendary Devil fruit.

[Kōri no kokyū]

Its fenrir.
It has to be fenrir at this point.

First , According to Norse, Fenrir is son of loki.
And He chained like Loki in one piece. Apparently power so great , he had to be restrained.

When Fenrir Chains breaks , Ragnarok Begins , means Battle Against God's.

Second.

This is loki Official colors.

Spoiler

And this is Cover page of Luffy with a wolf and same color as Loki.

Spoiler

Third ,

The battle at Castle.

Spoiler

Look at the mark at the wall.
It looks like Big wolf Claw mark. Thats same size as Rode by the way.

So given Loki Size , Even that Mark size fits the bill.

 

[Gaimon The Pirate]

Good theory

 

[nik87]

You may be right but I find it lame, it shouldn't be any of the manifestation of children's nightmares and Fenrir was one of them.
Instead of a 4-leged animal, I would prefer it to be some humanoid like Nika/Buddha/Asura...

 

[milluki]

we already have so many inu inu fruits..
a couple weeks ago, cerberus was introduced. devon's, yamato's, jabra's, lazooo's
i say loki ate the eargod fruit. his crush is called lola! like the loveinterest of bugs bunny.