(S)he's an odd bird...

[Akira8604]

Really?!! Doesn't act like a rooster. The most meek bird in there....

I have a rooster that's super chill and just hangs out. He doesn't act like a typical roster at all.

 

[TurriGallinas]

Ok, so far split leaning roo...

This should be interesting. Do some roosters not want to mate? Or if it is a boy, maybe still too young?

 

[VeryHappyHens]

The left one is a cockerel and the right one is a pullet!!

 

[JessicaDotta]

Well, I guess if it's a roo, eventually he'll crow. If it's a pullet, eventually her comb and wattle will turn red and she'll lay an egg. As far as the size of the bird, I have a mixed flock of seven. They were all the same age, but all different sorts of sizes.

Do share with us when you know what he/she is

 

[Medodge]

Additional pictures from the side will definitely help the gender experts.
I'm intrigued.

 

[Aquira]

I'm gonna guess pullet on this one. As far as I can tell, there's no saddle feathers and little to no comb/wattle.
And, I've seen ladies with long hackle feathers (I've got two EE ladies that do). This seem more in line with those than male hackle feathers...

 

[Weeg]

I see rounded saddle feathers and pointed hackle feathers, hardly a comb but bright tail feathers. Docile, and not laying yet. More signs point rooster, but I don't know yet.
I'm lean gin towards pullet I believe. @TheOddOneOut, @Overo Mare what do you guys think?

 

[LateBirdFarms]

Those hackle feathers are actually round. The pattern distorts them.

ETA: At least I believe that's the case. In my experience, as limited as it may be with birds not of the production red varieties, the dark center stripe with the lighter base color on both sides make them look a lot more pointed than they really are.
I don't see any sickle feathers either. Even cochin roosters with their round floof tails have spillier tails than that.

 

[Chris2018]

That is a pullet in the first picture.
Color alone states pullets.

 

[AusHen]

Everything I see on this bird suggests it's a pullet not yet laying. I have a few hens that have hackle feathers with patterns like that which make them appear pointed but they are actually rounded