My all time favorite is Aeris from Final Fantasy VII. FFVII is the first RPG that I have played and I fell in love with Aeris immediately! She's adorable character; kind and beautiful. My other favorite characters are Zidane (from FF9), Setzer (from FF6) and from other games than FF's: Kitana (Morta...
Sailor Moon is full of cute couples! But my favorite.. I don't have only one so I'll say few: Haruka & Michiru: They are super cute! Especially when Haruka is jealous of Michiru! Their relationship seems to be unbreakable (even though Haruka sometimes flirts with another girls..) Zoisite & Kunzite: ...