He is known as the sensible one of the band and the most mature. They also call him poppa smurf.
That's one of the most sensible examples I've seen today.
The comparative form for "sensible" is "more sensible" and the superlative form is "most sensible."
the most sensible
Although Liam can be funny, he is not known as the funny one in the band, Louis Tomlinson is. Liam is known as "the sensible one" in the band.
Harry is the most Wanted in One Direction! My Guy!
What is the most sensible length of a common ball
Niall Horan eats the most out of all of One Direction
One Direction
Most of one direction's songs are about love
more reasonable, as reasonable as...; less reasonable; very/extremely reasonable, the most reasonable. [the first 3 forms are the Comparative; the 2 last ones - the Superlative].
The most famous member of One Direction is Harry Styles.