Eko van Otter is afraid of several things - mostly bobcats, coyotes, mountain lions - but these are highly rational fears and phobias are irrational. Eko van Otter's irrational fear would have to be peladophobia - the fear of baldness. He's not exactly sure what it is, but having hair seems to be an extremely important part of his body. It doesn't necessarily have to be head hair either - Eko van Otter has a fear of any body hair baldness as well. It's mostly internally-directed and a fear of his own prospects of one day becoming bald, but he does get uncomfortable around bald people. One time back in Anchorage, his teammate Stavros Halkias came in with a nice, freshly shaved bald head and Otter got freaked out. Halkias was so... smooth... and shiny... it weirded him out. The source of this phobia must be something more deeply rooted and innate, as he's always been this way and his family members seem to share the phobia.