Madara (斑) can be translated as "spots". Tobi can be translated as "jump", or as "kite". The latter translation connects Tobi with Taka through the Japanese proverb "a hawk born from a kite" meaning that an extraordinarily gifted child can be born from ordinary parents.
The phrase "Tobi is a good boy" has proven to be very popular among the Naruto community. Although not said by Tobi himself, many have found the comment to be rather hilarious and, as such, Tobi is depicted as a carefree child or a good-natured character in many fanmade art and videos on YouTube while incorporating the phrase or a parody of it.
Tobi's mask made a cameo appearance in the ending omake of Naruto: Shippūden episode 129 along with Baki's face and Haku's mask.
Tobi appears to have a liking for dango as seen in Naruto: Shippūden episode 99.
Madara's hobby is falconry. As Tobi, his hobby is accompanying "Deidara-senpai".
Madara's favourite food is inarizushi, while his least favourite is roe.
Madara wishes to fight the upper class Konoha ninja.
Madara's favourite phrase is "beating someone hands down". As Tobi, his favourite phrase is given as "secret (?)".
"We're all mad here. I'm mad. You're mad."