Since 2004 most series have been richly illustrated in color.

The series is written and illustrated by various authors.

The series was profusely illustrated with photographs, woodcuts and line drawings, many specially commissioned.

In most countries, the series is illustrated by Marc McBride.

At Newnes, both the series were illustrated by the same person - Thomas Henry.

The series is written and illustrated by Yōko Sanri.

The series was illustrated in the ligne claire style.

The series will be illustrated by Jose Holder.

The series is illustrated by Macky Pamintuan and began publication in 2006.

The series was illustrated with line drawings by Caney, and have only recently gone out of print.