Malone

1. athletic

1.1. regarded as athletically built

1.2. known for his rugby achievements

2. brave

2.1. did not think twice about joining the expedition

2.2. offered to climb the tree to survey the plateau

2.3. during one of the nights, he explores the plateau by himself

3. practical

3.1. he brings the professors down to Earth by mentioning practical problems

3.2. for instance,

4. amiable

4.1. McArdle even admits that Malone has a friendly personality