Character Design Drafts

Here, I sketched some character design in 2 forms, one is using simple line and stroke to construct, while for another one is drawn in human form. Notice that I use '@' to symbolize 'online' for both. The first one is easy but it's not what I want, just sketch for fun. I'm happened to draw helmet for my characters to wear on their heads. I like to draw something 'chibi', it's my style of drawing. So, my character for the project is going to be like Manga style, which I would like to learn. I'm going to search for tutorials on how to construct 'chibi' Manga character.