Hubble Space Telescope-based diagram of ’M_V versus (V − I)’, corrected for MW extinction, for all stars within the Peekaboo dwarf body. Several the hottest stars ((V−I)₀ < –0.25 mag) and four supergiant stars (M_V, 0< –6.0 mag) are marked by their numbers in Tab. E.1. The additional extinction of δA_V = 0.16 mag and reddening of δ(V − I) = 0.057 mag in the E and W H II-regions (estimated above in this section) is not taken into account in the plot. Its effect is shown by an arrow in the upper-left section of the plot. Stars No. 1, 2 and 3 show very blue (V−I)₀ of –0.88 and ∼–0.60. Despite rather large errors σ(V − I), they are much bluer of the border of the main sequence at (V–I) of the hottest OV-stars of –0.32 mag (Lorenzo et al. 2025). These ’blue outliers’ can be very hot evolved stars, with the surface temperatures up to 150–200 kK as suggested by Lorenzo et al. (2022) for several such stars in the galaxy Sextans A. We plot also positions of 5 ’nebulosities’ (N1–N5) within the borders of W and E H II regions, which are marked by circles in Fig. A.1 (top panel).