Well that's how I got into this site, an old friend told me about it. Doubt it would work the same way in 2017 especially since nobody really uses the web browsers on DSi's anymore.
Ive done research and found out its not Ho-oh MissingNo can evolve into Rydon and Kangaskan. But nothing is known why MissingNo evolved into that but before they released the game they were planning of having Marowak evolve int Kangaskan. Take a look at the child in Kangaskans pouch and then Cubone. The same. But they did not include this in the game as it seemed scary for children. A Cubone tearing out Kangaskans bone Scary