in your opinion what is the most obscure legendary pokemon?

Deoxys (Regular Form). I mean, c'mon. When you think about Deoxys you think about it's three forms, not it's neutral form.

 

Probably Eternatus. I mean, when you think of Legendary Pokémon you think of Pokémon like Groudon, Mewtwo, Ect. not eternatus.

 

I agree with the one above. When thinking of Legendary Pokémon, I was gonna say Heatran but Eternatus never even crossed my mind.

Hes supposed to be a 'big bad' legendary and almost part of a trio, but aside from iyts freaky design, it feels kinda forgettable?

 

I'd have to go with Heatran, actually. I mean, what even is its purpose? If I remember correctly, it is supposed to watch over/control volcanic activity, but that may just as well fall to Groudon, in my opinion...

 

Can I just say I did not remember Heatran at all before reading this thread?

Also I'd reckon Cresselia; mostly because everyone and their mother probably think it's a mythical Pokémon (when according to Bulbapedia it's actually a legendary)

 

I'd say Calyrex. I mean, who thinks of Calyrex as a legendary?
If I hadn't played Pokémon showdown a lot I probably wouldn't know it existed.
Plus, it's one of the only legendaries not to be featured in the anime (I think)

 

I know it's a mythical and not a legendary, but Volcanion. Such a shame since the first Water/Fire type is this forgettable thing. It has an interesting concept (steam/steam engines) that lends itself well to the Water/Fire typing, but it was just released way too late in gen 6's span for it to be relevant (especially considering there was no event story to go along with it).