I have three Malay cockerels, and you couldn't ask for a better pet that doubles as a security device - people think twice before they enter your barn when these guys run out at them. They mature very slowly and are not going to do well caged in small areas. They aren't as aggressive as most other Oriental games but can still be much more so than the average production chicken. My three are kept in line by an old fart Phoenix rooster half their size but with 5 inch spurs. He doesn't tolerate foolishness and they listen to him.
The cockerels themselves are extremely people friendly, like dogs. They learn tricks very quickly, like jumping up to get catfood out of your hand held high. Being a large size, though, they can easily knock down a small child if they are eager for food, etc, so you'd want to consider carefully whether to let little kids around them.
Malay can have nutritional issues as they are growing, from what I've read, and confined they will often featherpick, which is why I was given these cockerels to begin with, something had eaten their tailfeathers. But they are growing back now.
If I could find a good quality hen, I would consider raising some chicks. But they seem very hard to come by, and my bird money is spent on the longtails, for the most part.
Behind these two young cockerels are standard large fowl Phoenix hens, to give you an idea of size difference.