Ubuntu MOTU (Masters Of the Universe) is a continous effort to contribute by adding, maintaining and supporting software packages in Ubuntu Universe repository.
Generally to become a MOTU, you would have to work with software developers helping them in making their software available in Ubuntu Universe repository, knowledge of how to build *.deb packages is required at this stage.
One can apply to become a MOTU once he/she has made a significant amount of contribution to distro and forwarded his/her application to the MOTU council.
Advantages of Becoming a MOTU
MOTU has the advantage of joining the Ubuntu core developers group, which in turn can play a leading role in introducing and developing new features for Ubuntu operating system.
Interested in becoming a MOTU? Join the MOTU class in #ubuntu-classroom in irc.freenode.net. The Packaging 101 classroom would be held on 13 December 16.00 – 17.30 (UTC time).
Reference: Ubuntu MOTU website