Hi JC010 and welcome to our 'little' family
It sounds like what is going on appears to be quite benevolent at present, although some of the activity you are experiencing may appear to be a little frightening.
Let me discuss the images you captured first off as I am guessing this is the main concern for you.
The first thing to understand about nanny cams, especially those that work on Wifi, is that they can be hacked - very easily. The Wifi signal can also be prone to a number of visual phenomena where the streams can be crossed with another feed. This is why, as a paranormal investigator, I am very anti mobile phone use during investigations.
Looking at the way the image is presented where you capture the figure in the frame, it looks like an interpolated stream over your own captured stream that has produced a digital visual phenomenon. The main basis for this conclusion is the lines within the picture. It almost looks as though the capture is made up of two separate images (yours and another), overlayed, and the processing is trying to make sense of it. There are visible lines that clearly span across the entire capture you have posted, and are not retained to any particular area. This 'confusion' by the processing method can also explain why, in your capture, the room layout and angles of pictures hanging on the walls - which have not changed physically - look so out of place.
Another reason that I believe this is an interpolation, is the fact that the image captured appears to be framed. This is unusual for the capture of an entity. The only other paranormal explanation I may be able to offer, if indeed it is paranormal in origin, is that you may have captured some sort of portal and we are getting a glimpse of the 'other side'.
Portals are believed to be very powerful energy 'gateways' between other 'dimensions' and our plane. It could be suggested that, if this is indeed a portal we are seeing, the energy from this may have been powerful enough to distort the images that you see in your capture, after all, all Wifi or any recorded image is in itself an energy of some kind.
View attachment 36444
It, in all honesty, does not look very nice and although I hate to bring in the 'D' word, it does look quite negative at first glance. I wanted to look at it better and actually determine if this was indeed a humanoid figure or just a case of pareidolia. I took some imaging software and removed the grey lines, before moving the image segments together closer:
View attachment 36445
Although a lot shorter than in the original image due to the removed areas, it
does appear humanoid in origin. I can see hair, possibly a couple of little stubby horns, a nose, mouth, beard, a (pointy?) ear, an arm and shoulder, torso and leg. The more I look at this image, the less of a demonic figure I see, and more that of a
satyr.
Satyrs are the Greek version of the Roman
faun. They are commonly depicted as human from the torso up and goat below. They are known to be very knowledgeable, if not a little clumsy and mischievous. They have a high sex drive and are usually portrayed as such, commonly shown with an erection - and if you look at both images, this
could tie in with what
appears to be presented. The satyr is considered to be a male
nature spirit - more commonly referred to as an
elemental.
Elementals are not necessarily 'evil', although they can be either negative or positive towards the living. They are generally, as already mentioned, mischievous and clumsy. Other 'folk' that fall into the elemental line are fairies, pixies and goblins, to name but a few.
Going back to what I was saying about portals earlier, this
may explain why you are experiencing activity one minute, then nothing the next. Entities, or maybe just one, are passing in and out of the location through a potential portal. The problem with portals is that they can let
anything through that wants to come through. If there is indeed one on the property, you want to get it closed sooner rather than later.
If you know of anyone who is sensitive to Spiritual energies, or you can find a local medium (do your research and find out about their reputation and other work they have done previously), then ask them to come and walk around the home and see if they pick up on anything. Failing that, have a look for a local paranormal group and ask them to come in to see if they can pick up on anything. If they are any good, they may also be able to close any portal they may find for you or be able to put you in contact with someone who can.
At this point, I do not believe there is any concerning 'danger' to yourself or your family, but it would not hurt to protect yourself from any potential negative energies. As already mentioned, do not go seeking out any potential entities on the property - you could escalate any activity and things could become more frightening - especially
if there is indeed a portal. As soon as you start to acknowledge
any entity, you can become a 'beacon' that draws in further energies through it.
Keep us updated on any activity you experience.