Never played games or anything but watching the series. Now here's something I don't get. Since the creator of cortana is a woman , why the F would she design the avatar to be dressed like what's shown in the pic (which is from the game). That's a male fantasy unless that Dr is a big lesbo.
The one in the TV series makes more sense
Two sides to the coin here.
Cortana chose her own look and even chose her own name.
One part of it is that technology moved on dramatically through the release of these games but also the audience became more mature as they were mostly the same players that remained with the franchise over twenty years.
In that same time games went from having a core teenage market to having a 30-something core market and therefore games became more adult themed in time between Halo 1 and Halo 4.
The other side of it is that Cortana has also “aged” and becomes more humanised in time and it’s a bit like the Pinocchio story.
In Halo 1-3 she’s very much an AI presented by a robot-like body. By Halo 4 she’s almost entirely represented as a real human both visually and in her emotive responses and hence her body looks like that of a real woman’s which is of course much easier to do with more risqué imagery.
You’ll note though her body is quite realistic and that of a more mature woman and not a perfect model figure. Her hips are big and wide and her boobs are even a little saggy. So in the case of a female audience playing the game they won’t be put off by the fact she has this perfect unrealistic body.
Also worth noting that Halsey herself is 65 by Halo 4 and Cortana is likely using that as a point of reference.
The TV series she is entirely robot like and procedural with a completely computerised logic based view of the world which will in time I suspect be augmented to make her more emotive and human like.
Nerd facts, she even changes colour based on mood. Not sure I’ve picked that up in the TV show but also didn’t look for it.