the [SMALL] tag is also useful for stuff like this.
Body parts with [small] tags are typically only damaged when the part they are attached to takes a significant amount of damage. If the [Small] body part is not attached to anything, it will only be targeted if all non-small body parts are destroyed (dark gray damage, not red) first.
[BODY:DECARABIA]
[BP:SOUL:throne of the soul][STANCE][FLIER][SMALL][UPPERBODY][LOWERBODY]
[BP:BAR1:pentagram crossbar][LIMB]
[BP:BAR2:pentagram right diagonal down bar][LIMB][RIGHT]
[BP:BAR3:pentagram right diagonal up bar][RIGHT]
[BP:BAR4:pentagram left diagonal down bar][LEFT]
[BP:BAR5:pentagram left diagonal up bar][LEFT]
[BP:BAR6:outer pentagon top]
[BP:BAR7:outer pentagon right diagonal down bar][RIGHT]
[BP:BAR8:outer pentagon right diagonal up bar][RIGHT]
[BP:BAR9:outer pentagon left diagonal down bar][LEFT]
[BP:BAR10:outer pentagon left diagonal up bar][LEFT]
The throne will only be targeted by attacks after all the BARs are destroyed. This particular creature has [SEVERONBREAK], which is important because the BARs aren't CONnected to anything and without the [SEVERONBREAK] tag they would be impossible to destroy. Unfortunately, wrestlers can grab the throne before the BARs are destroyed. Now that I think of it, adding the [INTERNAL] tag to the throne might fix this problem...
Also, the BARs here are unconnected to the root bodypart, so they can't be used by the creature. That's fine in this case, as they exist only to draw attacks, but the creature would not be able to use them to attack with, [GRASP] with, [STANCE] with, etc. If I wanted the BARs to do any of those things, they would have to be CONnected to the throne.
[BODY:SINS]
[BP:SOUL:throne of the soul][THOUGHT][SMALL][UPPERBODY][LOWERBODY][BREATHE]
[BP:WUB:crimson upper body][CON:SOUL] wrath
[BP:WHD:crimson head][CON:WUB]
...
[BP:WRA_J:crimson right shoulder][CON:WRA][JOINT][SMALL][INTERNAL][RIGHT]
[BP:WLA_J:crimson left shoulder][CON:WLA][JOINT][SMALL][INTERNAL][LEFT]
...
[BP:WLF_J:crimson left ankle][CON:WLF][JOINT][SMALL][INTERNAL][LEFT]
[BP:PUB:golden upper body][CON:SOUL] pride
[BP:PHD:golden head][CON:PUB]
...
This creature uses the same central [small] target trick, but the distractor targets are CONnected to the SOUL, and the creature that uses this BODY does not have the [severonbreak] tag. Consequently, slashing damage MUST be used to sever the various distractor bodies from the SOUL; the creature can't be killed with bludgeoning or piercing damage alone, although it can be weakened by such weapons. The throne can still be grappled before the bodies are destroyed. Because the bodies are connected to the throne, the creature can use their limbs to attack with, their legs to stand on, etc.
BODY:ARCANGEL_BODY]
[BP:LUMB:luminous body][SMALL]
[BP:UB:luminous upper body][CON:LUMB][UPPERBODY][SMALL]
[BP:LB:luminous lower body][CON:LUMB][LOWERBODY][SMALL]
[BP:HD:luminous angelic head][CON:LUMB][HEAD][SMALL]
...
[BP:ORA:right front luminous ox leg][CONTYPE:UPPERBODY][RIGHT][SMALL]
[BP:J_ORA:right front ox leg joint][CON:ORA][JOINT][SMALL][INTERNAL][RIGHT]
[BP:OLA:left front luminous ox leg][CONTYPE:UPPERBODY][LEFT][SMALL]
[BP:J_OLA:left front ox leg joint][CON:OLA][JOINT][SMALL][INTERNAL][LEFT]
...
[BP:1RWING:first right wing][CONTYPE:UPPERBODY][RIGHT][FLIER]
[BP:1LWING:first left wing][CONTYPE:UPPERBODY][LEFT][FLIER]
...
[BP:3RWING:second right wing][CONTYPE:UPPERBODY][RIGHT][FLIER]
[BP:3LWING:second left wing][CONTYPE:UPPERBODY][LEFT][FLIER]
Additional [SMALL] body parts can be attached to the root part, and the whole structure will be hidden from attacks, but not from wrestlers. In this case, the archangel's leg joints etc can be wrestled before the wings are destroyed. Unfortunately, once the [SMALL] core is exposed, all attacks will target the root, in this case the luminous body, and spillover damage will quickly destroy the attached body parts. This archangel can only take 2-4 additional hits once its wings are destroyed.
The [small] tag can be combined with the [internal] tag to create armored torsos
[BODY:ADAMAN_BODY]
[BP:SHLL:armored shell]
[BP:SPN1:shell spine][CON:SHLL]
...
[BP:SPN10:shell spine][CON:SHLL]
[BP:UB:torso][CON:SHLL][UPPERBODY][LOWERBODY][INTERNAL][SMALL]
...
here the torso can only be damaged by attacks that successfully penetrate the shell. Unfortunately, this trick is mostly useful for creating armored torsos, armored limbs (with the [liMB]/[GRASP]/[STANCE] tags attached to [INTERNAL][SMALL] bodyparts) can still be cut off by SLASHING weapons without having to damage the [INTERNAL] limb. It would work against BLUDGEONING and PIERCING weapons, however.
[BODY:OOZE]
[BP:NUC:nucleus][THOUGHT][INTERNAL][SMALL][SIGHT]
...
[BP:PS0:pseudopod][CON:NUC][SMALL] GRASP [STANCE]
[BP:UB:plasma membrane]
Same thing, slightly different focus: The plasma membrane is not connected to the nucleus, and the creature does not have the [SEVERONBREAK] tag. It does bleed, however (some rather pretty blue blood). Consequently, it can only be killed by exsanguination. If it had the [NOBLEED] tag, it would be completely unkillable, since the plasma membrane can't be destroyed and thus there is no way to target the nucleus.