captain underpants sandcastle

do a google image search on captain underpants for more drawings and ideas. I would like a 3d model for a reference for making a sand castle. I want it to be Captain Underpants, George and Harold all sitting with their backs to a simple sand castle. The sand castle should be slightly taller than the 3 of them. Actual sand castle will be large - about 1 meter tall and base 1.5 to 2 meters wide. Captain underpants should be in the center with the boys on either side and the castle portion most accessible from the back. Overhangs need to be minimized because sand will collapse but for example small ears and nose can stick out. This will be carved by 4 different young adults with no skills which is why we need a reference. Uploaded photo shows the captain in sitting position leaning back with legs out. No overhangs. Harold on the right - I was exploring how his hair might look with no overhangs. Characters should be much closer together with castle elements between them e.g. stairs. Castle should have a minimum of towers and elements and of course no overhangs. No crenelations either - crenelations are too fine detail. Lines can be created such as those for the underpants. I will bring red cloth for the captains cape and can use seaweed for a few details like eyebrows. I imagine the 3 characters all sitting and leaning back against the castle they "created". Incorporating arms into the castle or using the castle to support some gesture would be a bonus. square elements in the castle are easier than cylinders so mostly stick to square shapes like pyramidal roofs. Any depression like a window would probably need an arch at the top (less likely to collapse). I will probably 3d print your result so would like an STL file or a blender file but certainly I will want views from at least 4 angles/directions for the carvers to reference on the big day. This is a very low resolution, low detail project. It should only take a few hours of your time. If you don't think you can do this in 4 hours please stay away - I want people who are very fast modelers although I don't need this for a week or two.