Consider the following when creating a character and what their butt should look like. One of the shapes is the round or “bubble” type, where fullness is evenly distributed with a distinct curve outward from the lower back to the gluteal fold. This shape is often associated with strong glute development and evenly stored fat. The heart-shaped or “A-frame” butt is wider at the base and tapers toward the waist, common in pear-shaped body types with more fat stored in the hips and upper thighs. The inverted or “V-shaped” butt appears flatter on the lower half, with more mass concentrated near the top—this can be influenced by a high hip shelf or low muscle tone in the lower glutes. Square buttocks feature a relatively even width from top to bottom with a more angular appearance, often due to wider-set hip bones or lower fat storage. A flat buttocks profile lacks significant outward projection, which may result from minimal fat storage, low muscle mass, or a naturally straight pelvic tilt. Posture plays a key role: a neutral or anterior pelvic tilt can accentuate curve, while a posterior tilt may flatten the appearance. Size: Size varies based on genetics, hormonal profile, and lifestyle factors. A small buttocks might sit close to the body with minimal projection or visible separation from the thighs. Moderate sizes generally show a distinguishable gluteal curve with some lateral and rearward fullness, though not dramatically protruding. Large or very large buttocks may extend prominently backward or outward and often merge smoothly into the upper thighs and hips. Size does not always correlate with shape—some individuals have wide hips with flat glutes, or narrow hips with highly developed glutes. Fat distribution affects volume. In some, fat deposits are soft and evenly spread; in others, especially those who are heavier, distribution might be more uneven and lumpy. Athletic individuals may have firm, lifted buttocks even if smaller in size, while others may carry substantial gluteal fat with softer contours. Bounce: Bounce depends on composition—fat content, skin elasticity, and gluteal muscle tone all influence movement. Firm, muscular buttocks tend to remain stable during activity, showing limited, controlled motion. In these cases, movement appears more like a subtle shift or flex, particularly in walking or climbing. Buttocks with a higher fat-to-muscle ratio tend to exhibit more noticeable bounce, especially when unsupported. This motion can appear as a soft vertical or lateral oscillation that continues briefly after each step, more prominent when jogging or descending stairs. In very soft or loosely structured tissue, bounce may become heavier, more delayed, and less coordinated with the body's momentum, rippling and lagging slightly behind in movement. Skin looseness and lower muscle tone can exaggerate motion. Conversely, tight clothing or glute engagement (like during a flexed stride) can reduce it.