3. Are there any websites where I can watch Japanese users making crazy characters other than Niconico?
This YT channel showcases many cheap characters from various authors daily:
https://www.youtube.com/channel/UC10vK2sD82csg8NOZKR-67Q
1: There are ALOT more, you just gotta know where to look, most can found on blog pages the authors own but finding those can be tricky, which thankfully:
2: If your looking for an asian news site, QXMugen is a good one. it's a Chinese site, but sadly alot of the authors who do use it also use baidu which you may have trouble Downloading from.
3: don't know a huge number of them, but authors also use Bilibili.
4: The cheapie rabbit hole goes ALOT deeper than Crazy Catastrophe, just look up a nullfest war on youtube. You might be pretty outdated if you think Chuck Norris is still relevant cheap-wise. Like, this is nearly 10-years ago type stuff.