Natures are an essential part to the overall stat total of a pokemon. Having a beneficial nature will give the pokemon a 10% boost to the stat total and a 10% drop to the stat it hinders. However, neutral natures are not beneficial nor hindering, so they don't give a 10% boost or drop to any stat.

A Nature Guide, by GenEric .headerrow { font-weight: 900; } .tablename { font-size: 105%; } .headercol { font-weight: 900; } table.naturechart td, table.naturechart th { text-align: center; border: 1px solid; padding: 5px;} table.naturechart { border: 1px solid; }Nature Chart-Atk-Def-Speed-SpAtk-SpDef+AtkBashfulLonelyBraveAdamantNaughty+DefBoldDocileRelaxedImpishLax+SpeedTimidHastyHardyJollyNa?ve+SpAtkModestMildQuietQuirkyRash+SpDefCalmGentleSassyCarefulSerious

Fixed.

Hmmm....I'm not sure if I can do that. I'm going to have to ask iggy/fant to put it in a chart for me....

If you need it, the information is http://www.serebii.net/games/characteristics.shtml