As of November of 2016, six months ago, the Rankings for all regions has been broken and character images have not been working for ALL players.
This effects more than just the main MapleStory site; other fansites including Nexon's own official fan-sites have been negatively impacted by this, requiring developers to no longer support the character rankings or otherwise get a character's image. Players also no longer have a way to visually see their own characters or other friends.
Global MapleStory is the only service that is effected by this issue as all other regions including MapleStory Korea have very well designed rankings from both a front-end and back-end perspective.
It's been enough time. The amount of work required to get character images generating again should not be so resource-heavy that it has been completely abandoned and become an after thought. There has not once been any official response as to why it has been one of the longest standing issues with the main site and I wish it were resolved.
The MapleStory community contains an amazing collection of individuals who are willing to dedicate their time at no cost to benefiting others, which would include providing whatever coding is necessary or resources to be able to have an actually functioning ranking for players.