弼

bì = bi + Ø4

to assist

弼 character breakdown

弼
- 弓
- 百
  - 一
  - 白
    - 丶
    - 日
      - 一
      - 囗

a bow (weapon) / CL:張|张[zhang1] / to bend / to arch (one's back etc)

Mnemonic symbol: this character just looks like a composite bow.

Gitta Giraffe (gu) is shooting arrows with a composite bow (弓) in front of the engine ((e)ng1).

百

bǎi = b + ai3

hundred / numerous / all kinds of

百 = 一 + 白 : Mnemonic symbol: a one hundred 元 bill.

Beelzebub (b) enjoys preparing to allure mortals. In the airplane's living room (ai3) he's waving a flute (一) as a magic wand and enchanting one hundred white flags (白) to look like one hundred (百) one hundred 元 bills (百).